Hey,

I did the search on the M3 S3 ecua and found very little info on it. I have intake, fmic, d/p, high flow cat, catbac, and msd ignition. Will an non-cali M2 S3 work with a Cali car? And will it safely run without out the airpump? What octane is the M2 tuned for?

Thanks, Jay

 

Don't know the answer to the question of a non-CA M2 S3 ECU running a CA car, but don't recall that there was a difference. Many years ago, I ran the M2 ECU with:
M2 (ASP) medium ic
M2 CAI
dp
hi-flo cat with air pump
RB catback
Crane Hi-6
91 octane CA gas

Why would you not run the air pump if you have a hi-flo cat? The cat needs the air to do its job.

 

The M2 ecu will be fine with those mods up to 12-13 psi. A non-Cali ecu in a Cali car may trip the CEL, as it won't run the EGR. The M2 chip is tuned for 91 octane.

 

FWIW, I may have a M2 Stage III ecu for sale.

PM, if you're interested.

:-) neil

 

Yes, I'm looking to get a M2S3 for my car unitil I can get my PFC tuned. My PFC currently has a map for single running 550/1300 injectors.

My concers is with the tuning of these M2 ECUs. M2 has been out of business for sometime now and most M2 ECU are tuned a few years ago when we still had 92 octane. Plus I don't want to see any check engine lights on my dash. How can I tell if the ECU is for Cali car? Will it have the same marking as my stock ECU? I'm not running an airpump now, will that be a problem with the M2 S3?

 

Who did the ECUs for M2, G-Force? Whoever, try to find that out, and contact them.

 

No more of a problem than it would be for a stock ecu -- rough idle, etc. Why aren't you running an air pump? You need to to pass smog.

 

And your cat is going to die much sooner!

 

The reason for not using the airpump is that my harness/wire were soo dried out that it broke off. I tried to fix it but no signal to airpump to triger it on. Yes, I just pass my Cali smog by hard wiring it to the battery.

 

I ran an M2 Stage 3 ECU with the sames mods that you listed at 13-14 PSI with no issues.

The Cali vs non Cali car thing might be an issue.

 

So, the M2S3 Cali version will have the same numbering as a stock '93 ECU right?