Okay, so ive had my supercharger on for about 900 miles... (havent been driving too much), but lately ive started to hear a noise... at 2nd ear around 3-4500 rpms, my car makes a low WOOOOOO noise, and only in that range... is that normal? because it never made that noise before... anyone have this problem too?

 

That noise is coming from the sorry Bosch BPV TRD put with the kit. Buy this one and install it and you won't hear it any more plus you will regain some of your power lose! http://www.hoppenmotorsport.com/bypass.htm --- Get the Bosch 110 Sport .

 

off topic kinna but i was always wondering..whats BPV?

 

BPV = By Pass Valve - It recirculates unused compressed air. Normally used on Superchargers but can also be used for Turbo applications.

BOV = Vents unused air out - Mostly used on Turbos however a few Supercharger have been design to use BOV like the company Vortec

 

BPV = Bypass Valve

BOV = Blow-off Valve

 

I'd go with the Forge 007 "bunnyfart." The Bosch 110 Sport is good but it wont last too long, especially if your running the 9psi pulley. I tore the diapragm inside the Bosch 110 I had on. Its plastic and it will eventually go. The Forge 007 has a real piston inside of it and the entire BPV is made of Aluminum instead of plastic. The Bosch 110 will cost you around $55, and the Forge 007 will cost you around $115. Just my 2 cents.

 

thanks for the info... i was getting kind of worried as to what that noise was. it just wasnt normal. can i get the bpvs at any performance store?

 

Yes, check you local Performance shops for the Forge, Bosch and other compatible BPV's. Note too that the BPV is also known as a Recirculating Valve. It can also be bought at any Nopi performance retailer near you, or get it off eBay like I did!

 

hey I actually have a 110 sport that I could sell to you if you would like...$40 plus shipping...I used it for about 1 week on my tC then bought the Forge cause nobody had it at the time.

 

Get the Forge it works great! lol

 

are u supercharged

 

He's got an Auto , so I doubt it.