123 Ignition with Boost retard.
Turbo Mini Forums

Hi ppl,

A quick question, putting together a charged clubman and am having trouble deciding on the ignition.
I was going to go with MJ but have a slight concern about getting some one in Johannesburg to set it up...

I see 123 have now released a unit that provides 1 degree of retard per 1 psi of boost. These things are also super easy to setup so am leaning towards this for that reason.

link

http://www.123ignition.se/product/123-GB-4-R-V-BOOST.html


does any one have any thoughts on this? would it be an acceptable alternative to the Megajolt?

thanks,
Rick.

Sounds like a good compromise if you are totally unwilling to use MJ. But I will wait for the more experienced to comment.

If something is worth doing, it's worth doing half of.

Thanks for the quick reply, I understand the need to retard timing on boost to prevent detonation and that the MJ can set it up perfectly.
What I don't understand is if a static setting of -1 degree per PSI of boost is a decent enough 'catch all'

Rick.

1 degree pe 1psi is a general rule of thumb, nothing more. A properly set up ignition system will not be so clear cut. It will work well enough though, but not be ideal.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

I reckon it could be a good setup for turbo beginners or people who are a little bit afraid of EMS.

If something is worth doing, it's worth doing half of.

Hey man, I imported the MJ stuff for my mini although I still havnt set it up on a running car but with the info available, its a pretty simple unit to set up.

Greg

In reality setting it up is simple. There's plenty of people who'll give you a map to start with.

If at a friendly RR the operator should suggest what to do and then you could change it for him.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

thanks for the replies guys, so with a MJ is it simply a case of more power because of more accurate timing?

yes, but not quite,

you can get peak power with a locked dizzy (i.e 1D ignition) if you wanted

a normal clock work dizzy is essentially 2D, as the timing changes with revs (forgetting vac advance for now) so its more drivable at the various rpm ranges

MJ is 3D, as in the timing can be adjusted not just be rpm, but also by the MAP (vac/boost pressure) or TPS (throttle position) so the ecu can accomodate for the load/condition the engine is seeing

so essentially it will just make it miles more drivable

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Thanks for the info peeps, have gone for a MJ.

good to hear.. where are you getting your edis parts and other bits from? I didnt bother looking locally, and just imported them as a "kit" from a scrappy in the US.

Greg

I was looking for EDIS stuff a while ago and found this company, http://www.spitronics.co.za/. They can supply wasted spark coil packs and from what I heard from a friend of mine VR sensors and trigger wheels aswell.

Dan

"So wat we gonna do tonight Brain?"
"Same thing we do evernight Pinky!"
"Try to take over the world!"

Got it all from Trigger-wheels.com