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Bnr stage 3 with full 3 inch exhaust. Any problems?

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Old 08-15-17, 06:15 PM
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Question Bnr stage 3 with full 3 inch exhaust. Any problems?
Any one had any problems running full 3" exhaust? Or is any one running it without an issue? Thank you guys
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Old 08-16-17, 08:00 AM
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What issues are you wondering about? Your question isn't clear.

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Old 08-16-17, 12:07 PM
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Originally Posted by DaleClark
What issues are you wondering about? Your question isn't clear.

Dale
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.
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Old 08-16-17, 12:35 PM
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Originally Posted by existanzrx7
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.
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.
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Old 08-16-17, 12:51 PM
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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.
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Old 08-16-17, 06:23 PM
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Originally Posted by mkiv98
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.

Is it a full 3" exhaust then? What your running I mean
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Old 08-17-17, 05:46 PM
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Originally Posted by existanzrx7
Is it a full 3" exhaust then? What your running I mean
HKS 3" downpipe, Racing Beat dual tip catback 3", and also the bonez midpipe now at 3".
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Old 08-17-17, 10:02 PM
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Originally Posted by Narfle
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.
Called Bnr today and asked if they are still porting the wastegate by default and they said yes.
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Old 08-17-17, 10:03 PM
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Originally Posted by mkiv98
HKS 3" downpipe, Racing Beat dual tip catback 3", and also the bonez midpipe now at 3".
How do you think you and the tunner will get the boost under control? Boost controller
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Old 08-19-17, 11:39 AM
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Originally Posted by existanzrx7
How do you think you and the tunner will get the boost under control? Boost controller
I have mac valves and Adaptronic Select ECU. Hopefully you have at least a PFC before considering changing to full exhaust!
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Old 08-20-17, 08:12 PM
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Originally Posted by mkiv98
I have mac valves and Adaptronic Select ECU. Hopefully you have at least a PFC before considering changing to full exhaust!
Yup I have been a running a power fc for the past three years now but it's never been tuned.
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Old 08-20-17, 08:56 PM
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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
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