Donations towards server fund so far this month.

 
£0.00 / £100.00 per month
Page:
Home > General Chat > MicroSquirt Engine Woes

Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

On 6th Jul, 2017 Joe C said:
Ah synch loss, does the Microsoft have the vr pots??

Not sure Joe, I thought at least the newer ones have the adaptive chip in them (but I may be getting confused with the newer MS3 stuff). If it has got the VR pots like a normal MS2 their setting is certainly a prime suspect.
Which version of microsquirt is it Mike ?

One final thought before bed, Mike, email me the whole project file. In TS, menu bar, file, vehicle projects, create project backup. Just save it as some sensible name and email the file. The strange AFR readings may be a wrong setting in the project file (but you also need to tell me which make of wideband it is and how you have it connected).

EDIT - bit added.

Edited by Rod S on 6th Jul, 2017.

Schrödinger's cat - so which one am I ???


jbelanger

1267 Posts
Member #: 831
Post Whore

Montreal, Canada

If it's the V3 Microsquirt (plastic cased unit with the connector on top), it has the good tach circuit (MAX9926). Which means there is no adjustment needed.

Except that some VR sensors generate a very high voltage or a spurious tooth which is usually cured by using a shunt resistor between VR+ and VR-. A 1k to 10k resistor should be used but there might be a need to experiment with different values.

EDIT: a 60-2 wheel often requires the use of a shunt resistor.

Edited by jbelanger on 7th Jul, 2017.

http://www.jbperf.com/


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Much appreciated chaps, sorry for slow response just got back from Yorkshire War Experience. Heads Burnt to a Crisp.

Ill get unpacked and smarten those bits for you Rod.

Again very very much appreciated guys.

Thanks

Mike

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Ok Rod here are the Parameters

I did look for Roberts Dynograph from his Astra but the stupid Photobucket thing has removed them

Ive found a video from a Dyno of roughly the same setup

Engine Size: 1600cc
4 Cylinders
Injectors 304cc @3Bar
TurboCharged (GT17)
Idle 1100rpm
Map at Idle 1.04psi
RedLine 7000rpmish
190BHP @ 6200 RPM 12psi
200Ftlb : 3600RPM 12psi


Hopefully this is everything you need.

Ill ping the other stuff over to your email buddy.

Cheers

Mike


On 6th Jul, 2017 Rod S said:
As Joe says, try opening the throttle slowly. To get the fast throttle response right (blipping it or fast acceleration) is a whole load of other settings under the "Accel Enrich" tab in Tunerstudio but ignore that until the VE table is close to being correct.

As I said yesterday, and Colin said, your VE table doesn't look right. If the values are too low it won't rev and you will see AFRs go lean even if opening throttle slowly.

If you have the registered version of TS (TunerStudio) there is a good table generator that will give you a good starting point. It's not particularly obvious where to find it and if you have the "Lite" (ie, free) version of TS you don't get it along with many other useful tools.

If you haven't got the registered version just post up the following parameters and I'll see what the base table looks like and if it's wildly different to yours I'll email it over.

Engine size,
No. cylinders,
Inj flow (in cc/min if you're quoting engine size as cc's, not lbs/hour as some are sold)
stoich AFR (which is 14.7 for petrol so I already know that !)

Engine type (N/A, turbo, turbo with I/C, supercharged, supercharged with I/C)
Expected idle RPM,
Expected MAP at idle,
RPM redline,
Expected peak BHP and at what RPM and what expected MAP (ie, boost)
Expected peak torque and at what RPM and MAP.

Edited by MikeRace on 11th Jul, 2017.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

Mike,
email with the complete project file received OK.

On 9th Jul, 2017 MikeRace said:
Much appreciated chaps, sorry for slow response just got back from Yorkshire War Experience. Heads Burnt to a Crisp.
No worries, I was away the weekend too - The Killers headlining BST at Hyde Park on Saturday but I took a sun hat....

In the project file you have one major issue, in Project Properties you have the "Megasquirt/Microsquirt selection" set as MS2 - this must be changed to "Microsquirt (cased)". Although the workings of the code is essentially the same, and it's the same CPU, for some reason the pin assignment is slightly different which is probably why I can't see a valid AFR reading in the previous datalog.
Also, if you have updated, or re-loaded the firmware (as Joe suggested) it is ESSENTIAL you select the microsquirt option, not the MS2 option - it isn't always obvious as it defaults to MS2 - else things will be even worse.
I would also suggest you change the temperature setting (in the project) to celcius (if only to make life easier for me...)

I've run the VE table generator with the numbers above and, as expected by Colin, Joe (and to some extent myself) I get much higher numbers.

A couple of pictures attached, not sure how this will work since I dumped photobucket (I haven't yet got the flikr thing to work for me, I'll try and sort that later.)

For the moment I've left them on the same x/y axis values as your previous one to make comparison easier.
What I should do is generate it with a better range of MAP values ("load") and a better range of RPM values but can you be sure MAP at idle is really as low as 1.04psi ??? That's only 6.9kPa, I've never seen an engine idle that low even with a tiny cam which I doubt you have.

Once we clarify that, I'l re-generate the table and email it to you.

HOWEVER......
FIRST YOU MUST FIX THE SYNCH.

It's probably as simple as putting a resistor across the VR wires at the microsquirt plug as Jean suggested (i'd forgotten about that issue with 60:2 wheels) but one thing you said in the very first post confuses me.
You mention a Bosch adapter ???
With a microsquirt (and most Megasquirt setups) the VR+ and VR- wires should go straight to the unit, nothing inbetween, just in a screened cable with the screen grounded at the microsquirt end. It's particularly important with the later hardware with the adaptive input chip that this is done right.

One final point, I'm still seeing a large trigger offset compared to the expected 90 degrees in the base settings. Are you sure that offset was verified by the timing gun or did you not change it in the project settings after testing it ?

I'll re-do the table once you confirm the idle MAP (just needs to be approximate, maybe Robert can confirm what his Astra idle MAP is - I may have one of his datalogs somewhere but I haven't filed it anywhere obvious).

EDIT - forgot to add, I would also change the basic engine settings to 4 squirts per cycle, alternating (rather than two per cycle simultaneous) but leave that change until last. It doesn't affect the pulse width, just the order, which might better suit the order you have them wired in. In fact there may even be a better combination, I really don't know that much about the non-sequential setups as the siamese code I use is fully sequential (which actually makes life a lot easier, but you need a cam sensor).

EDIT 2 - and which make of wideband so I can check the calibration table is correct in the settings ?


Attachments:

Edited by Rod S on 11th Jul, 2017.

Schrödinger's cat - so which one am I ???


Joe C

User Avatar

12307 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

good stuff Rod,

yeah, lowes Ive seen at idle is 40 somthing KPA i think, even on over run it probably wont go much below 30 kpa... sugests a calibration error or its got a different sensor to what it thinks it has.

atmosheric is approx 100kpa btw..

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



robert

User Avatar

6743 Posts
Member #: 828
Post Whore

uranus


Hi mike here you go ,
















boost at max bhp was around 11 psi , boost at lower ranges was around 7 to 8 , it rises due to small wastegate syndrome .

since then i have raised the cr to 10.17:1 ,and bost is now on 10 psi rising to 13 psi at max rpm ...also when i did the head i scraped a 4mm thick mass of carbon off the backs of the inlet valves, it pulls much harder from 5800 to 7 now . i am guessing at 178 bhp .

hope that helps
regards
robert.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM


Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

OK,

From Robert's last plot it looks like -12.7psi on over-run and, trying to scale it visually, around -9psi at idle.

In real numbers that would be about 40 kPa (a) which is what Joe suggested (I've probably seen as low as 30 at idle but the MG Metro cam I use is fairly mild).

I'll re-run the table generator with 35kPa as a compromise and Robert's torque/power figures and RPMs and see what we get.

It will be a short while, I'm in the middle of something else.

Schrödinger's cat - so which one am I ???


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Thats excellent Rod, really appreciate the help!

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


robert

User Avatar

6743 Posts
Member #: 828
Post Whore

uranus

i get tickover at 20 inches on the boost guage ,which equates to around 33 on the map

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Right im slowly ingesting all the Info provided by you kind chaps.

Ill pick up some Resistors on my way home and try those. (I did notice the Sync Loss when revving now Ive thought about it, the laptop was losing Data when applied throttle)

Ill apply all the setting and Maps Rod has popped up and change the Properties to "microsquirt"

My Wideband is a PLX one but I cant remember the exact model (will check tonight)

Ill Triple check my timing again but I had it set to Zero on the timing Gun.

Just to Clarify im basically bridging the VR Wires with a resistor correct?





Massively Appreciate the help thus far guys.


1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

Sorry for the delay Mike, I got distracted by something else last night.

For the VE table once I've sorted a revised version I'll email it to you. You can then save your current table and import the one I send, a lot easier than typing it all in.

For the resistor, yes, as sketched, so long as there is nothing else involved (I'm still not sure what you meant in the very first post about the Bosch thing).

Rather than just watching loss of data, in TunerStudio there is a series of trigger loggers - select "diagnostic and high speed loggers" from the lower menu bar and then select composite logger and "start" and you can see the primary trigger, secondary (if there is one so not in your case) and a loss of sync count all in real time. I think it has limited functionality in the "Lite" version of TS but, IIRC, the limit is something to do with recording, but should still be able to see it. The blue line should show your 60 teeth and a space where the missing two are, the green line will do nothing for you as it's the second trigger, and any spike on the red line is your loss of synch.
This data is in the runtime (Megalogviewer) type logs as well (which is why I could see it) but not in an obvious way and not in an easy to understand format.

I'll look a bit later at what the PLX wideband outputs, but setting your project to "cased microsquirt" should (I think) at least give some reading rather than the static 12 I saw before.

More later.

EDIT - typo

Edited by Rod S on 12th Jul, 2017.

Schrödinger's cat - so which one am I ???


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Cheers Rod,


I forgot to mention about the Bosch Bit,

I have a Bosch Ignition Driver to Drive my Coil Pack.

Like this except the four outputs are simply paired to the two banks of wasted sparks.




On 12th Jul, 2017 Rod S said:
Sorry for the delay Mike, I got distracted by something else last night.

For the VE table once I've sorted a revised version I'll email it to you. You can then save your current table and import the one I send, a lot easier than typing it all in.

For the resistor, yes, as sketched, so long as there is nothing else involved (I'm still not sure what you meant in the very first post about the Bosch thing).

Rather than just watching loss of data, in TunerStudio there is a series of trigger loggers - select "diagnostic and high speed loggers" from the lower menu bar and then select composite logger and "start" and you can see the primary trigger, secondary (if there is one so not in your case) and a loss of sync count all in real time. I think it has limited functionality in the "Lite" version of TS but, IIRC, the limit is something to do with recording, but should still be able to see it. The blue line should show your 60 teeth and a space where the missing two are, the green line will do nothing for you as it's the second trigger, and any spike on the red line is your loss of synch.
This data is in the runtime (Megalogviewer) type logs as well (which is why I could see it) but not in an obvious way and not in an easy to understand format.

I'll look a bit later at what the PLX wideband outputs, but setting your project to "cased microsquirt" should (I think) at least give some reading rather than the static 12 I saw before.

More later.

EDIT - typo

Edited by MikeRace on 12th Jul, 2017.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

That's fine.

From your first post "Its running 60-2 Trigger Wheel through a Bosch Driver" I thought you might have something extra in the VR circuit.

Just put the resistor across the VR lines, preferably at the microquirt end of the wires, start with 10k, then 4.7K and, worst case, 1K

Schrödinger's cat - so which one am I ???


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Will do buddy cheers *smiley*

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


evolotion

User Avatar

2909 Posts
Member #: 83
Post Whore

Glasgow, Scotland




On 12th Jul, 2017 MikeRace said:
Cheers Rod,


I forgot to mention about the Bosch Bit,

I have a Bosch Ignition Driver to Drive my Coil Pack.

Like this except the four outputs are simply paired to the two banks of wasted sparks.




On 12th Jul, 2017 Rod S said:
Sorry for the delay Mike, I got distracted by something else last night.

For the VE table once I've sorted a revised version I'll email it to you. You can then save your current table and import the one I send, a lot easier than typing it all in.

For the resistor, yes, as sketched, so long as there is nothing else involved (I'm still not sure what you meant in the very first post about the Bosch thing).

Rather than just watching loss of data, in TunerStudio there is a series of trigger loggers - select "diagnostic and high speed loggers" from the lower menu bar and then select composite logger and "start" and you can see the primary trigger, secondary (if there is one so not in your case) and a loss of sync count all in real time. I think it has limited functionality in the "Lite" version of TS but, IIRC, the limit is something to do with recording, but should still be able to see it. The blue line should show your 60 teeth and a space where the missing two are, the green line will do nothing for you as it's the second trigger, and any spike on the red line is your loss of synch.
This data is in the runtime (Megalogviewer) type logs as well (which is why I could see it) but not in an obvious way and not in an easy to understand format.

I'll look a bit later at what the PLX wideband outputs, but setting your project to "cased microsquirt" should (I think) at least give some reading rather than the static 12 I saw before.

More later.

EDIT - typo


surely you should just be using in1 and in2 and coil 1 and coil2 and leaving 3&4 disconnected if you only have 2 coils in wasted spark? (the module may not like being ganged up like that)

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.


Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

NEXT,

To get the AFRs reading properly, as well as changing the project settings to "cased microsquirt" (which will make sure pin assignment is correct) you must then set TunerStudio running with it connected to your microsquirt, ignition on to power it up but don't start the engine, then go to the very top menu in TS, "tools" then "calibrate AFR table" then select the Inovate/PLX option, then "write to controller".

At the moment you have no calibration table loaded so even when you fix the other settings, you need to do this to get a valid AFR reading..

Schrödinger's cat - so which one am I ???


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Dennis im just going off a Wiring Diagram that said to gang them up but I cant find it. It was on the MS Site somewhere.

Ive got it Firing a Ford Coil Pack.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Ill pop all these settings up Tonight bud and post up my findings :)

Fingers crossed.


On 12th Jul, 2017 Rod S said:
NEXT,

To get the AFRs reading properly, as well as changing the project settings to "cased microsquirt" (which will make sure pin assignment is correct) you must then set TunerStudio running with it connected to your microsquirt, ignition on to power it up but don't start the engine, then go to the very top menu in TS, "tools" then "calibrate AFR table" then select the Inovate/PLX option, then "write to controller".

At the moment you have no calibration table loaded so even when you fix the other settings, you need to do this to get a valid AFR reading..

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

On 12th Jul, 2017 evolotion said:


surely you should just be using in1 and in2 and coil 1 and coil2 and leaving 3&4 disconnected if you only have 2 coils in wasted spark? (the module may not like being ganged up like that)

Agreed,
The module is to drive four individual primary windings, if you only have two individual primary windings (which a standard Ford coilpack does), just use two of the inputs/outputs or the coilpack might get excessive dwell and overheat.

Schrödinger's cat - so which one am I ???


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Ok chaps,

Ill rewire the Igntion Module to Just use in 1 and in 2

Ta

Mike

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

I cant help think this would be simpler *hehe!*

Edited by MikeRace on 12th Jul, 2017.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


Joe C

User Avatar

12307 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

NNNOOOOO!!!!!!!

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



MikeRace

User Avatar

6549 Posts
Member #: 1149
#1 Basshunter Fan

Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

Well chaps it appears ive taken a bit of a step backwards :/

I now have zero spark.

I firstly switched to Microsquirt in the settings.

Then installed the 10k Resistor as per.

Turned over the engine and nothing, no splutters and what not.

Ive taken some Tooth Logs for you boys to take a look at.

I altered the wiring on the Bosch Igniter but still nothing.

The clockwork Dizzy is looking more like a Reality
*angry*

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


Fibreglass Parts? - http://www.tdkracing.co.uk/
Split Rims? - http://www.force-racing.co.uk/


Rod S

User Avatar

5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

Need to see the tooth log, where have you put it ???

Always best to change one thing at a time, for example if the change to microsquirt in the project settings killed it (rather than the 10K resistor) it may be the firmware is wrongly MS2 or there is something else wrong in the project I didn't spot.

Schrödinger's cat - so which one am I ???

Home > General Chat > MicroSquirt Engine Woes
Users viewing this thread: none. (+ 1 Guests) <- Prev   Next ->
To post messages you must be logged in!
Username: Password:
Page: