Quote:
Originally Posted by robc1976
no, it is caused by poor wastegate rattle design of BMW...if this was "just" tune related RB's would rattle bad also.
|
It is just tune related. I upgraded to stage 2's with billet wastegates, rattled as bad as ever. My rattle only ever started when I switched to G5iso on stock turbos even, I switched back to my old g4 board to experiment and it was perfect again. Installed new stage 2 turbos, still rattle like mad. Dropped JB4 in favor of full cobb control(going 100% e85) as soon as I was running cobb only not a bit of rattle to be heard. Sure stock turbos are absolutely prone to rattle issues, just saying the JB4 G5 ISO can take otherwise perfect non rattling turbos and make them sound like a mariachi band. I know I was not the only one this was happening to either.