[SPORT injected]

probably a noob question here but....what is the difference between 4-1, 4-2-1, 4-3-1 headers? and which is the best application to use for N/A?

Thanks

 

[Excalibur]

4-3-1?

4-1 is best for n/a topend power
4-2-1 is best for lower end power.

 

[BlackOut070]

4-3-1?

Maybe you mean a Tri-Y header, but I dont think they make one for our cars.

I've only seen them for the B series

 

[jdmEGO]

4-2-1 is the best for our motor i think, more low end power cuzz god know we need some

 

[shutter13]

BC race header is 4-2-1.... and thats probably the best header out right now if im not mistaken... so im going to say 4-2-1 is the best design for our cars

 

[BigGreg030]

:yeahthat:

 

[Si_ESQ]

I think it depends on what you're doing with the car and what other mods you will have. Drag (always above 6,000rpm--so you probably want more top end flow & power) vs. auto-x, road course (u will utilize more midrange rpm--so a header that gives you everything up top might not be the best thing.)

There is never one "best" anything. It all depends on what your application is.