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BMW 3-Series (E90 E92) Forum
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HELP MHD FLASH problem
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| 08-14-2021, 03:06 AM | #1 |
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Second Lieutenant
 57
Rep 264
Posts |
HELP MHD FLASH problem
OK so i am FBO and decided to go stage 2 plus 93 Oct. i did all the tune ups ext. as soon I go under WOT I hear a siren or a similar noise but only on the driver's side. no 30ff code or anything. hit 19psi . but as soon as i go back to stage 0 under full WOT no noise!
ALSO on stage 2 + my exhaust is almost 10x much quieter. almost like its being muzzled.(i have Catlessdownpipe and muffler delete ) Thanks!! |
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