Bnr stage 3 with full 3 inch exhaust. Any problems?
Dale well mainly like will the turbos be able to build boost with no problem with little back pressure? Also boost creep I would imagine would probably be an issue. I'm pretty sure Bnr ports the waste gate.
Joined: May 2004
Posts: 519
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From: San Pedro, California
I have the BNR S3 and just swapped to straight midpipe, it's overboosting like crazy. I am revisiting the tuner soon, we should be able to get it under control.
If you have a super wide open exhaust it will creep bad. BNR doesn't port the WG any longer. Porting the wastegate helps. So does some exhaust restriction. The wastegate door blows open at high boost and you may need an aftermarket actuator if you wanna run 20psi or more.
Joined: May 2004
Posts: 519
Likes: 28
From: San Pedro, California
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If you have a super wide open exhaust it will creep bad. BNR doesn't port the WG any longer. Porting the wastegate helps. So does some exhaust restriction. The wastegate door blows open at high boost and you may need an aftermarket actuator if you wanna run 20psi or more.
Joined: May 2004
Posts: 519
Likes: 28
From: San Pedro, California
I used manual boost controllers in both wastegate actuators and capped off the other end to the 2 control solenoids after I got my 3" exhaust made - got the boost back to factory levels, no problems





