[rashad.mashtoub]

Hey,

Well after i installed my AR downpipes a week ago i felt that the car is making a weird sound as if it is leaking some air from some where, so i had it checked by the tune shop who replaced my downpipes and said that said that everything looks perfect. I checked the wastegates for both turbos and they seem to be in perfect condition.

I know that some may say well thats the spool of the turbos, but no it is not because the spool is soo different than what i am hearing. The car is giving me no codes at all as well, but that sound is killing me because it is very annoying.

Any feedback that could help me figure out what the hell is going on with my bimmer?

Regards,

[Transport3r]

If you were leaking significant boost, you'd get a 30FF code pretty quickly. Check the IC piping and the charge pipe to make sure maybe?

[Lux3m35i]

Under which conditions does the sound appear? Under light acceleration before the boost builds up? For example while cruising and if it goes up hill.

[BD_F22]

It could still very well be the turbo's spooling or possibly wastegate rattle that is now amplified because you went catless.. Also do you have upgraded diverter valves/bov or stock diverter valves? It could be you have a small leak in your dv's since increasing boost with the downpipes

[rashad.mashtoub]

Well I am not getting any codes so far, not even at full throtle. The sound comes out when i press down the peddale for a bit or to the max.

[mike07s]

Check your downpipe to exhaust gaskets.