sifoo alvin, yes apexi spiral does gives all around performance,i think this should be the two world combine into one..eg: short primary runners of the 4 pipes but the 4-1 design, unlike other 4-1 header which got long runners..ps: got any APP brakeline again? hehe
has anyone try the ultimate with ignition harness to their 20v?
has anyone try the ultimate with ignition harness to their 20v?