0
I believe you meant to ask about an EXHAUST header. Most headers advertise a 10-25% hp increase. I believe that a more reasonable figure is 5-8% depending on the quality of the headers. "Tuned" headers tend to yield slightly higher gains because each runner is supposedly the exact same length so there is less backpressure. Some back pressure is okay, so don't try to eliminate it all.
Personally I have fabricated my own exhaust headers for quite sometime now, I don't use same length runners, instead I change the rocker arm ratios to adjust for the shorter/longer length the exhaust must travel.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
How much horsepower on a 1999 5.3 vortec?
270 horsepower 300 with flowmaster duel exhaust, kn cold air intake, and skunk2 cams.
How do you get more horsepower for your 1998 civic ex quickly?
how much u lookin too gain?? Catback exhaust, cold intake, full exhaust.
How much horsepower does a 3.0 v6 engine have?
depends on rpm, intake and exhaust, manufacturer,type of fuel etc..
Besides a Cold Air Intake and a new muffler what is another easy way to add horsepower to a 2003 Cavalier?
a pacesetter header will help free up some horsepower, a muffler won't do much if anything at all, the rest of the exhaust pipe from the catalytic converter back needs to be replaced with larger diameter pipe as well.
How much horsepower is added with a custom exhaust and cold air intake to a challenger se?
maybe 15 horse or so if your lucky.
How much horsepower does a header and cold air intake add to a 1997 eclipse rs?
Maybe 7-10...lol if you really wanna open it up get an exhaust. most restrictive part in the system with those headers, Cold Air and a mufflar its around 13-16
How much horsepower does a 1992 Mitsubishi 3000gt have?
ABout 161 hp out of the factory with mods such as exhaust headers and wide pipe with cold air intake its about 218.
How much horsepower does a cat back exhaust and a cold air intake add to a Scion Tc?
You will get maybe 5hp out of the cai and 10-15 out of the catback.
How much horsepower does a 2000 Crown Victoria have?
200 horsepower ( 215 horsepower with dual exhaust )
How much horsepower does exhaust give you?
It depends on your vehicle and the type of exhaust you buy.
How much horsepower does a 91 RS 5.0L with a flowmaster exhaust 2.73 gearing and cold air intake have?
Without putting it on a dyno, it is impossible to say. The 2.73 gear makes no difference in the horsepower. The exhaust and cold air intake will add around 10 h.p. would be my guess, and that is all it is, a guess. So take the stock H.P. and add 10.
How much horsepower will you gain with an aftermarket intake on a tiburon?
3-5 horsepower
