Under normal driving conditions almost none whatsoever. At high RPMs maybe 5 to 6 h.p.
From 5 to 10 horsepower.
I have a 1994 Chevy pick up short bed. and i have about 240 stock. i have put a cold air intake on it which is an extra 30 horsepower. I also put headers on which imporved it aswell. I have flowmaster exhaust and i have about 310 horsepower.
what year
10 horsepower.
about 2 wheel horsepower
The cold air intake may add 5-10 hp to the 335 it was built with.
15 hp
you will get an extra 2 or 3 horse.
nothing unless you reprogram the computer.
270 horsepower 300 with flowmaster duel exhaust, kn cold air intake, and skunk2 cams.
5 or 10 horse.
depending on the style of intake, and type of car you can gain up to around 20% hp