Quote:
Originally Posted by NG329
As a fellow road course guy I feel your pain.
The truth is that once you modify the car GM will not warranty anything. The car needs to be completely unmolested. I've been told that GM will even make the dealer send pics/vid before approving warranty. Not sure if that's true but I wouldn't put it past them.
Jannetty tuned my car which is essentially stock plus a Magnuson 2650. It makes just under 700hp at the wheels. I would love a cam (not sure if the Callaway package added this), but I don't want to risk the increased service/inspection intervals. I'm on the fence. No matter how good the tune is you just can't get away from shortened service intervals.
|
Four months after buying my ZLE and tracking it, I had multiple random misfires and took it to the dealer I bought it from. They replaced the plugs and wires under warranty even though I tracked it. Another month later, AC belt shredded due to the impact of the curbing on turn-3 Road Atlanta and the phone falling out of the Ram X-Mount, hitting the dash and bouncing into the Seat Cooling button commanding the AC Compressor to come on at WOT 6000rpm and creating a hard code. GM reviewed the scan data from the CEL which gave them the lead to check BCM data as well. The OEM GM tune commands the AC system to shut off at 70% throttle but there was never a line of code for if the system was off, but the seat had a command for ON.
The short of the story is the Dealer replaced everything and then GM voided my warranty after updating their tuning for seat cooling commands. Thanks GM... You're Welcome!
If you are tracking these cars, the Mother Ship of GM will do as they care and hang you out. So I have chosen what I think will make the most gains for my use of the car. I have yet to see anyone with a Cam change making the low-end torque and still pulling through the RPM at a power level for road racing where tires still have grip. I do see the lifters and rocker trunions as a weakness that I will soon address... but changing the cam, not unless Brian Tooley releases one that offers data from his Spintron and keeps the full range of power like I have while making more!
Addressing the cooling issues, unlocks more power and with e85 blending to 40% allows more timing, better cylinder cooling with that fuel blend and gobs of torque by keeping the velocites up to where I am at 830lbft of torque like a hockey stick. Coupled with an A10... short-shifting saves the stock parts but like NG329 says, eventually you gotta go in and inspect it all. Right now I am at 32K total miles and 13K track. It's about that time, yet my oil samples say I am still good!