Hey Guys,

I am about to put together a new engine. I currently was running a 6-port turbo, with high compression rotors. When I put together this engine, I will be using low compression rotors, but I am wondering about the 6-port irons. I am assuming that by using my 6-port irons, I will have more flow, compared to 4 port irons (without porting of course).

Any thoughts on this? Does the poor port matching of the lower intake come into play?

Thanks

 

i'd post that up in the 2nd gen forum, i think there is some debate on the subject already though to be honest.

 

Because of how big the ports are you need the higher compression to keep a decent low end for driving around

4 port- low compression
6 port- high compression

the poor port matching was intentional when mazda made then you will lose power if you port match it