I've done a bit of reading about this and from what I think is right a 1-3 2-4 header, which matches the KA firing pattern, will net a torque increase in the lower rpms' and a 1-4 2-3 header will increase the torque curve in the higher rpms'. The question is which one of these would you recommend for my car (pretty much stock KA, has custom cai, 2.5" catback, z32 VLSD and lowered).
Just by the fact that they are constantly in the upper rpms I'm guessing most diehard drifters go with the 1-4 2-3 header?
I'm just trying to figure out which one to buy, thanks for the input
