The engine is an '87 13BT. I am porting the intake side using mazdatrix templates. I asked them about exhaust and they said there was no template and to just smooth out the port so it's even with the iron insert. Those of you who've ported your turbo's what are your recommendation. I have complete faith in mazdatrix, but I thought there would be more exhaust. Thanks

Steven

 

I'm sorry I fucked up. Can this be moved to the second gen section. Dammit.