Greeting, I'd like to know from personal experience who has rebuilt there motor and hasn't done any type of porting or rather internal modications to the plates or housing. I'm curious to see the HP gains and torque with a fresh motor and an After market ECU. I'm currently in this position and i have the option of rebuilding to stock or porting it because its already open. I think the reason most don't port there engine's is solely due to the stock ECU but I have a Mirotech 10LT. The vihicle is an 87 T2 (S4) block.

 

I've yet to build a rotary engine, so I can't help, other than to give a bump up and see if anyone responds.

 

on a turbo? fresh motor will help. ecu is a qualified yes also.