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Rushan Rushan is offline
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Default Exhaust rattle when applying brake - 05-07-2020, 05:54 PM

hello, just wondering if other have it also, when your car running and still stand and you apply brake 5-6 time quickly like you boosting the brake paddle it start rattling sound which i guess its from the exhaust flap.

Just wanted to know if its normal or others having the same or it can be a small vacuum leaks?

Car otherwise normal and boost is perfect, its just got my attention today after changing brakes and was trying to see the brake paddle and pressing it 5-6 quick times it started rattling the exhaust flap


09 E92 335i - Hot-Climate Middle East package, M Sports suspension, 19" Rims, 6AT fully built internals, bushings, raybestos clutches and sonnax with xHP stage 3, Differential lockdown, New RB Turbo CHRA, JB4 - Map 3 70 adder with N20 TMAP - MHD BMS Race Flash with Tuned Duty Bais and PID - BMS Oil Cooler Valve - RB PCV - K&N DCI - AFE Air Scoops - 98 Super Fuel - WAGNER FMIC - 3" down's, RB Inlets- BMS charge pipe With Tial BOV - BMS Meth Kit with FSB, 30/70 Water/Meth on CM12 nozzle
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Bmw335turbo Bmw335turbo is offline
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Default 05-08-2020, 05:31 AM

Based on your year model that it is normal to have wastegate
rattle.


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Default 05-08-2020, 08:15 AM

Quote:
Originally Posted by Bmw335turbo
Based on your year model that it is normal to have wastegate
rattle.
Late 2008 , the rattle from exhaust only when I press the brake paddle 5 to 6 times quickly on park and still stand. Otherwise its not rattling on cold start or anything that's why I assume as brake booster take vacuum from the engine vacuum lines on the same line that goes to the exhaust flap, just wanted to check if its normal behavior or i may have vacuum leak on that specific end towards flapper


09 E92 335i - Hot-Climate Middle East package, M Sports suspension, 19" Rims, 6AT fully built internals, bushings, raybestos clutches and sonnax with xHP stage 3, Differential lockdown, New RB Turbo CHRA, JB4 - Map 3 70 adder with N20 TMAP - MHD BMS Race Flash with Tuned Duty Bais and PID - BMS Oil Cooler Valve - RB PCV - K&N DCI - AFE Air Scoops - 98 Super Fuel - WAGNER FMIC - 3" down's, RB Inlets- BMS charge pipe With Tial BOV - BMS Meth Kit with FSB, 30/70 Water/Meth on CM12 nozzle
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