About Bisimoto Exhaust Header

[jkrolikowski]

To get the most out of the Bisimoto exhaust header, how necessary do you think it is to also install a larger (diameter) catback exhaust? I don't want the sound that comes with these aftermarket, performance exhaust systems, but I also don't want to spend $800 or more on a Bisimoto header to find that I won't get the most out of it because of the back pressure from my stock exhaust system.

Thoughts?

[lordoja]

read my post called "exhaust theory" it will give you a lot of insightful info, there are certain mufflers you can use that wont give you that deep or loud of tone

[mtnbikaah]

I've always used a full exhaust with a header system because with better airflow comes more power. And he is right that all exhaust are different and there are a few that stay in the sound range your wanting. But the header by itself isn't worth it because the gains will be minimal. Good luck and I hope this helps

i dunno if i would call these gains "minimal" with the Bisimoto header..

http://www.cb7tuner.com/vbb/showthread.php?t=143273

that dyno is with stock exhaust.

[drummersteve7]

save your money on bisi header, and get a turbo setup.
Costs a smidgin more but better results.

[lordoja]

save your money on bisi header, and get a turbo setup.
Costs a smidgin more but better results.

^ this
is true, only reason you would really wanna go with the bisi header is if you are trying to go all-engine

[GhostAccord]

Larger is not always better, keeping the optimum exhaust pipe temps and maintaining velocity is what you need to look at. Does your Bisi header have any sort of megaphone or is it just straight pipe from the collector back?

[wed3k]

run a cutout

[foamypirate]

but I also don't want to spend $800 or more on a Bisimoto header to find that I won't get the most out of it because of the back pressure from my stock exhaust system.

So don't spend $800 on a Bisimoto header...

Spend $630 and buy mine!