wide band air fuel ratio gauge
Turbo Mini Forums

I've wandered about using MJ to provide the rpm & vacuum data, as it streams them over RS232, coupled with the AFR data from the AEM gauge it should be possible to log trends such as "around 3k it's a bit lean" obviously the timing won't be in sync so it would be no good for fine tuning EFI, but I would have thought it would be good enough to spot trends. Sadly it's been too long since I last wrote any software to try it myself but what do people reckon to the idea?

An advantage of the emerald is you can link in the AEM gauge and use the onboard data logger to do just that. it logs up to 8 parameters i think for about 2hours of data which can then be saved off and viewed. it can also be viewed live as a trace to see when the boost is coming in how the AFR is affected etc.

You can do the same with Megatune on the MS.

But we need two widebands to check the AFR on inner and outer cylinders. Hence the need for a separate data logger.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

i'm not too fussed, crossflow soon for me

but yeah i understand your point.

fortunately if i went down the hyperterminal route, we use it for datalogging on our gas turbines so someone could adapt me a program for sure.

Axel the thing to do here is be VERY nice to a friend with one of the gauges and ask to borrow it ...... saves you a couple of quid and you can return the favour when they need to do it.

Not 100% sure but you should be able to datalog both channels across MS2 with a little fiddling .... need a V3 board in front of me to check this as I only have a V2.2 with MS1 SnSe so can't eb sure.

Every day is a school day ...........

How fast and how expensive ...... the same question...

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Bill S' is the man for MS in the UK no question IMHO ....

Every day is a school day ...........

How fast and how expensive ...... the same question...

Actually Rob it wasn't ........

but if your offering .....

Every day is a school day ...........

How fast and how expensive ...... the same question...

Doh!

at somer point axe l im going to rig up 4 thermocouples on rings under each plug to see how that responds ..ill let you know

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

Just to clarify.

Bill S has confirmed that the MS2 can read/log two widebands.

But it will need some internal wiring to connect a processor pin to an output on the loom.

That has saved me about £300 !!!!

Edited by Paul S on 3rd Jun, 2007.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Good work Axel.

Can you PM me Bill S's number I've been a prat and lost it and need to order and MS2 and would rather deal with Bill based on his previous good service.

Every day is a school day ...........

How fast and how expensive ...... the same question...