these headers are for people who want quality work and time and passion put into every aspect. All headers are backed by engine simulation and and header exhaust tuning software custom tailored to each setup.

this particular unit is for a deckplated G23 setup which will be using a load of nitrous

 

Very interesting looking header... I did notice something a bit odd to me. The ports on the flange are ROUND and the exhaust ports on the H22 cylinder head are OVAL. What gives ???

 

its a 3D port flange. Inside is port shaped and tapers to round like the rest of the exhaust