If I wanted to do warranty compliant (or rather "tolerant") bolt-ons, what can I get away with so the car will still "run" when I flash back to the factory map? For now, ideally I'd like to do: Chip+Tune \ CAI \ Headers + High Flow Cats \ Rear exhaust \ Injectors \ Pulley(s) \ Blower porting + intercooler (in that order).
But from what I am reading I'd have to stay somewhat conservative with the injectors. The guys at my dealership said that GM can get a little sticky on Headers and Cats, and that its better to modify the back half of the exhaust system if you are going to change anything. I am also looking at feasibility of a Z06 or LS9 clutch assembly, to reduce rotating weight.
We just recently installed a corsa axle back and an airaid cai on one of our demos and it helped quite a bit. Not sure what the numbers are, but you definetly tell a big difference in the seat of your pants!
I don't believe the clutch assemblies are interchangeable.
Sorry, why are we starting at 450hp? Does the V put out 556 on paper but only 450 on pavement?
Great info. I guess I'm in the same boat. 2 paths:
A. 2.5 with factory lower: about 18% increase in boost, no additional mods required
B. 2.4 with factory lower: 23% boost no mods required
C. Factory upper with 9.5 lower: 21% boost needs 50mm idler.
With these options, my questions are:
1. How much HP to the wheels does the increase in boost generate?
2. Does RWHP care where the additional boost comes from?
3. My supercharger doesn't rattle at idle or sound like marbles, but when I'm really getting into in, faint rattle (almost like under octaned) but it's never seen anything but 93 since I've owned it.
4. Would the upper swap with the solid isolator cure that rattle?
Thanks guys, love the car and the forum.
Before you do anything, go to your dealer and complain about the rattle at high rpm. I never really heard any rattle from mine but my son said he did. I went to the dealer, the service advisor said he couldn't really hear anything so he got the shop Forman who listened for about 3 seconds and said " book it in for a replacement. I think they know they will all fail eventually and would just as soon replace it before it can cause further problems. If you mod it first, set aside an extra 4 or 5 thousand for when it goes.