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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 10-01-2012, 05:30 AM   #1
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Join Date: Aug 2012
Location: sydney
Posts: 16
My Ride: e46 320i m sport sed
Changed guibo& Centre bearing, now new vibration

i have recently bought a 2004 320i m sport sedan. automatic. it had a vibration when taking off from stand still.. changed guibo and centre bearing. fixed the taking off vibration. but now i have a new vibration. the vibration only happens under load/acceleration and only on 3rd and 4th gear, never on take off, which is confusing the hell out of me. this vibration only started after changing guibo and bearing. the harder i accelerate the more it vibrates. one thing i noticed id the rubber surround on the new centre bearing was pretty flexible, much more flexible compared to the original, so i decided to use the original rubber surround with the new bearing. and also when i took off the front part of the driveshaft the rear part of it just dropped. it didnt hit anything though. its pretty light and i doubt that could of put the driveshaft off balance. im hoping this has happened to someone else and found a remedy. one more thing i noticed is that the rear tyres are different in width, one is 235 wide and the other 225 wide.. please help... dont want to be changing stuff unneccesarily. other than the vibration the car drives fantastic. thanks in advance
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