New Parts Installed need help!
New Parts Installed need help! Before the install I had a cam only 99 ss ran perfect. I decided to put heads, fast 90/ and a 90mm TB with 42lbs Injectors on at the same time. Now, i have hp tuners and have a tune that i thought would have been close to the setup i have. I uploaded it. and tryed to start the car, It started and idled for about 1-2 secs at 2500rpm then imeadiatly spiked to about 5500 and i shut it off. I also have had it just shut off on me right after it started ran for about 2 secs. Im not sure if this is mechanical or the tune, I tried my old tune to see if it would run and it does the same thing. Any ideas???
Sounds like a vacuum leak. Check everything related to the head/intake install for leaks. A vacuum leak will cause the engine to spike to a higher RPM, even 5500 RPM if the leak is large enough. Make sure the cam sensor behind the intake didn't get unplugged during the swap, as well.
I did, Just pulled the intake off there is a crack on the bottom of the FAST 90mm intake, Almost sure thats the problem, im going to put my ls6 intake back on to rectify this problem/ Then fix the crack. thanx
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Verdad Gallardo Do you have the button bolts for it? How bad is the crack(s) is it just a crack or is there missing peices? What you can do isget yourself some epoxy and cover the cracks with that.