Quote:
Originally Posted by Black16
Which is exactly why I am asking on here. I only want to put maybe 500-550 RWH once you go too far the car becomes a money pit. Just a small blower and torque converter with the fuel upgrade might be best in the long run. The more power the possibility of more problems becomes a reality. Plus i like the 4 cylinder mode for longer hwy travelling.
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Not trying to be a know it all, or tell you how you should mod your car, but IMHO the worst thing on these cars is the AFM/DOD. It's not known to be one of GM's better innovations, and really doesn't help much with the MPG's in real world driving. (it may on an engine dyno) It's not a very reliable system, and especially not if you intend to mod. I work with a guy who's buddy had a GEN6 that sustained heavy motor damage to the top end. It apparently took the cam out, so my guess is it had something to do with the DOD lifters. Pretty sure the M6 cars don't use DOD, but they still get the same lifter arrangement as the automatic cars. If I ever take the heads off I for sure will be upgrading the lifters and deleting anything to do with AFM and likely also the VVT as I assume if I was doing head work I'd also be running an aftermarket cam. Just my $.02.