CAI and Engine whine

07-03-2006, 10:08 PM
Ok just installed Shark Injector and a CAI. Now it seems that I have this annoying whining noise heard mostly from 1500-3000 rpm. It is driving me crazy. Anybody have a similar problem?

07-08-2006, 11:06 PM
wheres it coming from?the eng? or components of the eng.?like alt,ps pump,compressor?

07-09-2006, 12:00 AM
It sounds like it is coming from the intake. A friend thought it might be the injectors.

07-09-2006, 12:17 AM
might be too much gas and causing a strain on the eng. making it whine how much psi them injectors push out?

07-09-2006, 10:36 AM
It seems that the sound is worse at light acceleration and goes away when you fully depress the accelerator peddle. Also only at low rpms and worse when in auto mode ( I have a tiptronic).

07-10-2006, 07:16 PM
ok maybe air is coming past the injectors or pressure

07-11-2006, 12:00 AM
OK talked to a guy at a shop and his friend put a CAI on an M3 and he apparently had the same squeeeeel. AAAHHHHHH. Tempted to put old stock box on before I check into the looney bin.

07-15-2006, 05:28 PM

Thats the sound of more air getting sucked in. I have the same sound on my 325i with a Carbonio Carbon Fiber CAI.

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