I have a 91 305 tbi firebird i had a roller rocker cam and i changed it to a 194/214 at .05 i put headers on and a new intake. it was a edelbrock intake cam combo.The headers are pacesetter and i have no cat and i have a hypertech chip.ASK IF U NEED MORE INFO. IM
TIRED OF DRIVING MY CAR THAT IS RUNNING HALF ASSED. I have the timming advanced 8 degrees and i have my fuel regulator maxed out. the car has a kinnda sputter when i pound on it and i winds up slow NO TORQUE it backfires through the tbi every once and awhile kinnda often. I got on it hard for a 50 yard shot i was in first its a (auto)and i stoped at the next stop sign and it died. I go to school
on a 300 yard hill and it hits about 70 and runs about 3 grand and it almost stops accelerating and if it does accelerate it stays at 3,000. It doesnt want to wind rpms like the car did before the mods. PLEASE HELP ME MY CAR HASNT RAN RIGHT FOR A LONG TIME. IF U CANT HELP GET SOMEONE THAT CAN PLEASE.

 

you might want to post this to the tbi board.

 

Check your other post on the same topic.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...

R.I.P. #3
"He can see air"

 

There's something wrong with your engine, and changing cams has nothing to do with it. It sounds to me like you have at least one lame injector. Your description is classic lean-out.

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"So many Mustangs, so little time..."
ICON Motorsports