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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > BMW Fxx/Gxx B58 OBD Flashing is now supported by mFlasher
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      02-04-2019, 05:23 PM   #903
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Originally Posted by riskmaker76 View Post
Waste gate rattle?

I had some oddity when I was explicitly defining boost - the rattle was felt all over the car.
but isn't the waste gate more of an undertone? subtle? i can actually feel this one throughout the chassis...like physically. that's a good point though on the waste gate rattle. i really hope it isn't...
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      02-05-2019, 09:57 AM   #904
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Wastegate rattle sounds like marbles in a can...even almost like a knock

If its a shimmy - thats an odd one; Tranny slippage? Traction Slippage?

Another oddity I have had is with the MPPSK when they installed it they installed it too close to the heat shield / floor board under neath... the entire care would vibrate at a certain RPM - once they re-positioned the exhaust it went away.


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Originally Posted by eksigned View Post
but isn't the waste gate more of an undertone? subtle? i can actually feel this one throughout the chassis...like physically. that's a good point though on the waste gate rattle. i really hope it isn't...
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      02-05-2019, 12:16 PM   #905
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Quote:
Originally Posted by riskmaker76 View Post
Wastegate rattle sounds like marbles in a can...even almost like a knock

If its a shimmy - thats an odd one; Tranny slippage? Traction Slippage?

Another oddity I have had is with the MPPSK when they installed it they installed it too close to the heat shield / floor board under neath... the entire care would vibrate at a certain RPM - once they re-positioned the exhaust it went away.
hm...i've felt tranny slippage before. i dont think it's this. your comment about the heat shield though...is EXACTLY what i was thinking too. i figured with the way the turbo was spinning (sooner and faster)...makes me think this is what it is. it happens when i give throttle in a higher gear (borderline bogging the motor). it also decreased in severity with the DP that I installed the next day. appreciate the insight! need to look into it.
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