Scooterman

how come when headers or any aftermarket parts r advertised.. it says like a 25-30 hp gain for headers... and apparently depdning on the motor.. u dont get that much power increased.. dont understand

02StanGT

They don't telll you that the car getting that horsepower is not stock.

jdaniel

FOr the most part they expect a person with LT headers to be running an off road midpipe and a better catback. They are basically saying that with FULL EXHAUST you will see gains of up to 30 rwhp. With just LT headers you may see 15hp to the wheels.

fordguy17

headers on a stock 5.0 yield little gain....

99saleen351r

you could see a 25hp gain from long tube headers for sure

primetime5.0

you dont always gain with LT"s ive seen losses....

Civic4doorsleeper

if you had P&P, full exhaust, & cam(s).... the you will prolly see gains up too 30hp from headers lol

66_mustang_04

they do that to make money...and people fall for it

P Zero

Its kinda false advertising, i was at Milan dragway and saw the dynomax test car, it was a 460 in a 85 GT the thing through FULL exhaust, along with high flow cats ran 9.50's ALL DAY. So Im sure if you put the stock stuff on that youd lose 30 hp. . Dont believe the hype.