08SPEED3Veteran
Member
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- 08 Mazdaspeed 3 GT
Ok so recently I got my car back from the body shop and after driving a few days I got a cel. PCM 2187 which i know is lean at idol right? My AP AFR was reading between 14.5 and 14.7 at idol which i thought was right. The car drives fine and at WOT its in the 11.7 range where it should be. The only thing is that at idol I can here a high pitched whistle coming from the passenger side somewhere around the FMIC coupler. the whistle only happens at idol. I also have a catch can mounted in that area too so i dont know if one of those hoses might have come loose and is causing whistling. Any ideas?