fastrnuGSR

i was driving home tonight and i noticed a whistling kind of noise coming from my engine whenever VTEC engaged. i have an exhaust, so i couldn't hear it that well but it was still noticably there. anything to be worried about?

Kai

If the car is running fine and not throwing any codes, I wouldn't worry about it yet.

Epoch

Sometimes my B18C1 makes some weird whiney noises at night above 3K rpms. I've been noticing it for about the last year, and there hasn't been any problems to date...

LT

my C1 does the same whine...sounds like a supercharger, but everything is fine :dunno:

GSR4444

same whine over here. It sounds like a replica vtec noise almost. When i first got the car, and was test driving it, i thought that the previous owner may have had a vtec controller or such, but then i hit the true vtec and knew that my other guess was wrong. but hey, everything is running fine. shouldn't worry about it.

kfar09

you hit true vtec? is there a fake one? i'd assume you are talking about when you hit 5800 rpm and the secondaries open up. "true" vtec kicks in at 4400.

RboYi

do u all have intake cone filters? i'm 90% sure its my filter, its been happening ever since i installed the CAI

LT

yes...aftermarket intakes do whistle. but i don't think we're talking about that (at least i'm not)

GSR4444

i meant that i had a wine from likle 3k rpm and up, and i when i first got the car, i thought that the whine was the vtec. But when you rev it higher you can hear the vtec and the secondaries hit. So i menat that the whining sound i kept hearing at 3k rpm was not the vtec.

fastrnuGSR

ya my intake is stock, the supercharger thing is a good way to describe it. but its cool as long as it doesnt cause any problems, i had an autox today and beat the car pretty hard and it was fine so i guess im ok. thanks guys