hey i have a few questions.
i have a 1987 pontiac firebird v6 2.8 mpfi, i would like to know if eliminating the catalitic converter would increase horepower in my car, if so how significant ? also if eliminating the air filter and putting in a cold air intake is any good for it, also if so how significant ?
i have a 1987 pontiac firebird v6 2.8 mpfi, i would like to know if eliminating the catalitic converter would increase horepower in my car, if so how significant ? also if eliminating the air filter and putting in a cold air intake is any good for it, also if so how significant ?
Senior Member
It would increase only slightly, but you'll lose torque. A high flow cat replacement will do the small increase and won't kill torque. Do you(and your environment) a favor: keep the cat.
Don't know about the intake; Camaro has a different intake.
Don't know about the intake; Camaro has a different intake.
Senior Member
hey, dont worry about the cat yet, the exhaust manifolds are the worst restriction, get headers first........
Supreme Member
There's no cai available as far as I know. You could gut the cat too.
Senior Member
k&n panel will sort it out for now,
could just rid the cat, i had a bad cat but still passed emisions - though U.S testing i figure's a little harsher than ours
could just rid the cat, i had a bad cat but still passed emisions - though U.S testing i figure's a little harsher than ours
im asking this because my catalitic converter is old and its all tore up and radaling inside so i figured if i gut it out then i would be fine, also for the guy that said that exhaust manifolds go bad for this car, i no it deos cause i have a small leak in mine, but besides that the car is fine (great condition). by the way i am looking into selling it because i am thinking of getting a fourth gen so im trying to sell it by the end of next month, if anybodies interested ofcorse thanx
Senior Member
Noooooooooooooooooooo!!!!!!!!!!!!!
dont do it
forth gens have the same chassis as third's ,
thirds are just as fast with a bit of help- smallblocks a smallblock!!!
forth has less room inside due to soundproofing and stuff.
third looks nicer- cleaner lines
somebody help me out here..........
dont do it
forth gens have the same chassis as third's ,
thirds are just as fast with a bit of help- smallblocks a smallblock!!!
forth has less room inside due to soundproofing and stuff.
third looks nicer- cleaner lines
somebody help me out here..........

Senior Member
Quote:
If you're around Knoxville, I might take you up on it.Originally Posted by jdust
im asking this because my catalitic converter is old and its all tore up and radaling inside so i figured if i gut it out then i would be fine, also for the guy that said that exhaust manifolds go bad for this car, i no it deos cause i have a small leak in mine, but besides that the car is fine (great condition). by the way i am looking into selling it because i am thinking of getting a fourth gen so im trying to sell it by the end of next month, if anybodies interested ofcorse thanx Junior Member
It will let your exhaust flow better and that will give you more hp.





