RomRaider

Hey all. So I have a UUC 8.5lb flywheel on my 96 M3, and I'm looking to increase my idle to something like 800 to smooth things out a little. Pretty sure I'm clear on how this is done in RR. But I do live in California, so I'm afraid if I tweak this that it may come up as a failure when I go in for smog. I think I heard something about smog stations CRC checking the tunes on ECU's? Does anyone here have any experience with this?

Thanks!

Dan

If you use the right flash tool it will automatically correct your checksums.
I use ms41 quickflash and never had any problems.

https://sites.google.com/site/openms41/ ... flash-tool

Hope this helps

Cool thank you -- I'll give that a try! I have an extra ms41.1 that was pulled from a 328. Might just try flashing that hardware straight across with an ms41.2 full-flash/zap EWS and tinker with that. Don't wanna mess up the original ECU in the M3.