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This is the exhaust system I recently fitted . It is still a work in progress because I'm not really happy with the tone or the loudness of it . I'm sure with an extra muffler and some tweaks it will sound better .
Reason for doing it was to reduce turbine backpressure mainly as I found that at 400whp the 3" system wasn't doing the job well enough . This setup cut backpressure by a good 5psi at the turbine.
Also I wanted the novelty of having a loud exhaust on demand .
Left side is main 3" exhaust and is nice and quiet for around town and trips. Right side is wastegate only so there is no flow until turbo reaches the set boost pressure.
It sounds quite good from inside the car actually . Just too loud and too much of a staccato . I think I can improve both of those things ...hopefully ending up with something pretty cool.
Just curios why no one done that before on RX-7 or RX-8 to split exhaust pipes on stock rotary engine like here except without turbo (only rx-8 related).
06-25-2016, 10:53 PM
