o.k. I'm just curious as why on my the two other mechanics I work with both have GTi's 1.8T's one has a GFB BOV and the other has a HKS. When you rev. their motor at idle ( just hitting the gas sitting still ) I can hear their BOV's going off. But on my friends 92' Civic with a greddy turbo kit on it running a HKS BOV at 6PSI when I rev. his car the same way I can't hear nothing. I can feel the air rushing out but no noise. The two GTi's one's running 21PSi and the other 17PSI. Is it just that on a honda at only about 6-7PSi there's just not enough pressure to open the valve hard enough to make a noise. When I drove my friends civic you can hear the BOV when shifting just fine. I'm getting ready to put my kit on my EF9 and I'm just alittle curious cause I see DSM's at stock Boost levels ( which is about 10PSI right ? ) doing the same thing and you can hear there's. Is 2PSi make that much of a difference in power and pressure. Sorry if this may sound stupid I"m just curious at way one car does it and another doesn't. Thanks

 

man people report the same thing..

nothing wrong, also it could be because u running low boost.

 

I saw what someone posted earlier about it not sounding but that guy thought his BOV might be bad. I know my friends is just fine I"m just woundering if any other honda guys out there do the same thing or know of the same thing... it's just what I thought though I think he's just not boosting enough for it to open the valve hard enough to make a noise I just wanted to be sure. Thanks

 

The turbo's on the volkwagons are the size of a doughnut and they spool @ idle. The greddy turbo is MUCH bigger (and it's a SMALL turbo) compared to a kkk k03 that your frien'ds have (i'm assuming they are stock) and that would explain alot.

It's pretty hard to build boost at idle-- btw. If its blowing off when driving, and not at idle, that's NORMAL. The turbo's on the vw's are MICROSCOPIC (and that's why they spool @ like 800 rpm's) :P

 

I have never tried to boost at idle, but I know it would take a hell of allot to build enough boost to open my bov. When I drive normal it almost always sounds. If I drive like a grandma I can stop it from going off. I wouldn't suggest boosting at idle anyways. My buddy has a beefed up F350 Powerstroke and he can hit 10 psi at idle. :P
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

 

If there is no load on the engine, you will hardly hear the bov at idle.


Also, something I noticed, with a T25 at idle (reving up) the BOV is loud, with the exact same setup, using a 14b, you can hardly hear the bov at idle (when reving)

 

that's how mine is... I rev, but no BOV sound

 

obviously the T25 is pushing more CFM