Thread: headers, dp, and low end torque

i see that you guys all say you'll lose more low end torque with headers than you will with a down pipe. so im wondering why that is, besides just the design, i want like a full explanation if possible. thanks

This is not a "full" explanation but it has to do with more "flow" the motor flows more therefore you lose some low end torque but not as much as everyone makes it out to be...

see i have a GT and i put headers on, the car still moves just fine from a start, actually i like it better now because daily driving is much smoother, and totally worth the pull in the high end...and this is commin from an n/a GP owner ha

anyway the loss of backpressure means less low end torque, the better flow means more high end torque. essentially your shift your powerband into the higher RPMS so the car wont fall on its face as much after 4500 RPMs

It's about the velocity of the exhaust gasses. Google exhaust scavenging and I'm sure you can turn up some good explanations. And no matter what people try to tell you, it has NOTHING to do with backpressure.

oh ok ill be sure to google it. and seeing as how bio liked it i know that must be pointing me in the right direction lol

also, so if i just rev my car up to 4500 rpm's at the line and then launch would that give me a better take of or just spin my tires or do nothing at all?

Yeah, did you just ask us if neutral bombing is ok?

God I hope not.

But if you were serious...be sure to have enough money for a transmission lying around.

ok so i wont be doing that lol

and no i actually meant holding the break and gas at the same time, but would it do damage either way?

just stall it to 2k.

Plus the stock stall only goes so high...probably like 2750 anyways. So you can't go higher than that.

your not "losing" torque the powerband just moves up

you still have plenty of bottom end with headers. i can leave the line off idle and spin them.