4-2-1 vs. 4-1

whats the pros and cons of 4-2-1 headers an 4-1 headers

4-2-1 headers are better for low to mid rpm power and the 4-1 is better for mid to high rpm power. The 4-1 also hangs lower than the 4-2-1 so if you have a lowered car keep that in mind when you are driving, it is not that low but still it could be hit on something.

which one - in your opinion - do you think is better overall? and more beneficial?

4-2-1 headers are better for low to mid rpm power and the 4-1 is better for mid to high rpm power. The 4-1 also hangs lower than the 4-2-1 so if you have a lowered car keep that in mind when you are driving, it is not that low but still it could be hit on something.

how much power are we talking about from the 4-1 in high rpms compared to the 4-2-1

which one - in your opinion - do you think is better overall? and more beneficial?
4-2-1 - street & street/race
4-1 - race only

4-2-1 - street & street/race
4-1 - race only

Really? I just thought it set the exhaust flow to either be better for higher RPM(4-1) or lower/mid RPM(4-2-1). But I guess thats what I get for thinking.:icon16:

Really? I just thought it set the exhaust flow to either be better for higher RPM(4-1) or lower/mid RPM(4-2-1). But I guess thats what I get for thinking.:icon16:
No your right, most people don't drive around @ high RPM on the street so a 4-2-1 is a better choice since the engine is usually @ low/mid RPM's.

what about thos 2 pice headers r they just eaier to install or is there any thing positive or negative

2 piece - easy to install // more possible places to leak from.
1 pieces - harder to install // less possible places to leak from.

what about thos 2 pice headers r they just eaier to install or is there any thing positive or negative

I cant remember, but either theyre heavier or lighter, but I think theyre heavier since there is more metal on them, and yes theyd be easier to insstall.