Quote:
Originally Posted by xmicro_Redline
I am not sure if that info is correct, but if it is it may be because the difference in the braking system for one. They are identical Ecotec engines. Remember the ECM handles more than just power settings.
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Like Cheers posted, the 07 and 08 ECM part numbers are different. Also, none of the aftermarket tunes like wester's and BSR will work on the 08.
Anyway, finding out what the difference is between the 07s and 08s is pretty much just out of curiosity at this point since it looks like the GM tune will be released for all model years.