jds99camaross

iTrader: (6)

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???

DiabloFormula

iTrader: (58)

What did you load up?? Can you post it here, where is you location maybe someone local can help you.

jds99camaross

iTrader: (6)

Here is the tune and also a scan i did while trying to start it. Im not sure of anyone locally here Im in Raeford, NC.

LS1-450

iTrader: (33)

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.

jds99camaross

iTrader: (6)

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

DiabloFormula

iTrader: (58)

Did you use the button bolts for the valley cover that came with the FAST intake, if not that might be how it got cracked, this can be fixed as well that why it's not a total loss.

jds99camaross

iTrader: (6)

nope i did not, any suggestions on the fix? I was givent he intake and TB from my father i wish i would have known before about the bolts

1BADTALS1

iTrader: (4)

really a 3rd thred?? i guess thats one way to get answers fast.. lol and they are all the same...

jds99camaross

iTrader: (6)

yeah, it seems like when i only put my questions on 1 thread i get about 1 answer. I like more than 1 opinion. This way works.

DiabloFormula

iTrader: (58)

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.