aftermarket headers???

[kenjin]

how much hp do you guys think a aftermarket header will give a stock cb7??

[The-Gr8-Ox]

maybe 2-5 hp by itself, you'll see a better increase with intake and exhaust all together

[92Lxsleeper]

ya prob about 2-5 hp. a whole I/H/E setup is good, because it allows much less restriction on the air movement through the exhaust

[ChrisRHDJPN]

maybe 2-5 hp by itself, you'll see a better increase with intake and exhaust all together

This is correct. You will see only about 2-5hp per mod (intake, header, exhaust). However, together, their effects compound each other, so you could see total gains of 20-25hp even, depending on what brand/style part you get, etc.

[AstroVannin]

Nothing noticable.

[jacobuchanan140]

You're going to be hard pressed to find a header for under 500 or so that'll help you more than an f22a4's stock manifold.

[92exCB7]

i ws sad after purchasing a $500 hedman chikara header for my f22 only to find that when i looked down the inside of the manifolds the stock header was smooth across the transitions of 4-to -2 an 2-to 1 on the other hand the chikara header had at least 1/4 inch of raw metal hanging over transitions which im sure greatly disturbed the flow of the exhaust . I feel like the stock header would flow better from the looks of it .

[8ball]

I think the best MOD would be high compression pistons, you see our cars are only 8.8:1 c/r. The throttle body intake and exhaust are all decent but our engines don't compress enough air to preform. Most people chose the H22 which has more compression and variable lift. But a good header is key to making power. You could force induce the engine as an alternative.