Sleepingz28

i just installed a fast 78. i checked everything 2 times. my car when i start it will rev to 3000 and die it will stay alive if i give it a lot of gas but when i let off
it dies. it sounds like it is back fireing through the intake. can someone help me.
Josh

Revelation Z28

iTrader: (10)

is your IAC hooked up?

check your fuel pressure regulator too.

Full-Force

iTrader: (11)

Probably not seated and you have a massive vacum leak.

00cls1camaross

iTrader: (10)

did you change the valley cover bolts? i not the ports didn't seal and you probably have cracks in the bottom on the manifold.

Sleepingz28

no i didnt wow i feel stupid. will my car run fine when i get those bolts in

Red99TA

iTrader: (11)

Depends on if you cracked the bottom of the manifold or not. Most likely it will run fine after you install the right bolts.

senicalj4579

iTrader: (41)

Same thing happened to me when I did my ls6 intake. What happened was I accidently ripped out my map sensor wires and rewired them all wrong. I looked in my manual and rewired it again right this time and it was all good.

00cls1camaross

iTrader: (10)

i got my bolts from Paul's ace hardware. Button heads that are a hex pattern. If it is cracked, just throw some JB weld on it, it will be ok.

Grewe02

iTrader: (4)

i got the intake off again today and put the other bolts in the intake was not cracked and everything else is fine the car runs good just needs a tune thanks for your help
JOSH