Does anyone with a MCS with an ALTA CAI have a problem with a high pitch whistle at around 3000 rpm.

 

My Alta whistles through the entire RPM range. Its normal

 

mdsbrain mine does whistle though the entire rpm range but at 3000 it is high pitched and a little annouying.

 

Hmm..maybe someone else can chime in. I know that around 2500rpm the Supercharger starts to kick in. Maybe @ 3k its fully alive and kicking

 

Check your connections, it sounds like you might have a leak around one of the fittings and air is rushing in (or out) where it shouldn't.

 

gt6 I will check into that, I did install it myself maybe I missed something.

 

Resonance whistle is caused by a certain speed of air flowing through the cai. Faster or slower, and the literal 'whistle' dissapates.

Normal, especially for an unrestricted intake.

 

Mine whistles throughout the entire range as well, its annoying as hell. I love the sound of the supercharger but the whistle of the Alta cai is very annoying. I am seriously considering the M7 AGS and selling the Alta.

 

My question is why you are at 3000 rpm? 6800 is a much better rpm (or in my car, 7800 )

 

That is where I cruise at on highway to and from work,(68 mph) lots of smokies.It does sound much beter at 6800.

 

No whistle from mine. The supercharger screams under full throttle louder than stock, but no whistle or anything when cruising.

 

Same here, no annoing whistle, had it on for 75k miles now. I would check for something loose somewhere.

Nik

 

That whistle is not a problem; it's a feature. I've heard it on every Alta CAI-enabled car I've driven, and it always manifests at 3K RPM.

 

ahamos, I see you have the screamin' demon listed in your sig. do you like it. thanks for the info on cai.

 

I didn't mean two leave everyone out that replyed, thanks to all. MOTOR ON.

 

Yeah, I have the "whistle". To me it sounds like someone rubbing a metal brush against an old fashioned metal garbage can. It is annoying at particular speeds/rpm's. . . . But I do like to hear the whine of the supercharger when I get on it.

If only there was an intake that I did not have to hear. . . .