intake problem

**pizza123** · 10-16-2006, 07:27 PM

I have installed a fast intake on my 1999 corvette,i have gained good power but now i have a wisseling sound coming from the engine i have checked all the vacuum hoses and havent found the problem please help

txcosmos · 10-17-2006, 05:57 AM

might be from the larger throttle body. BUt your ear to the CAI and the TB, and see if that's it.

When I went to an aftermarket TB, it started whistling like crazy. You get used to it though...

**pizza123** · 10-17-2006, 07:20 PM

thank you for the reply,i am using a stock ported tb

**sunsetorangess** · 10-18-2006, 03:39 AM

Check all of your vacum lines and intake for leaks.
J

**Soltakr** · 10-20-2006, 11:10 AM

The whistling is pretty common on the FAST manifold. Now a leak is something else but from my experience with a few of these they do tend to hiss. I believe it is due to the intake speed has been improved and the air moving across the inner ribs is causing the sound. Or I could be complete wrong.

**ss~zoso~ss** · 10-20-2006, 11:36 AM

yea, seems like the increased air flow is creating this noise, if it gets worse, or you suffer MPG ,performance or vacum device defficiencys i'd say you have a vacum leak

**shady milkman** · 10-20-2006, 11:59 AM

Originally Posted by Soltakr

The whistling is pretty common on the FAST manifold. Now a leak is something else but from my experience with a few of these they do tend to hiss. I believe it is due to the intake speed has been improved and the air moving across the inner ribs is causing the sound. Or I could be complete wrong.

nothing to worry about very common...i heard on two guys garage that a throttle body spacer will eliminate it ...i dont see how it would. but yea dont worry..thats all that nice cold air going in