HKS blow off valve - Toyota Nation Forum : Toyota Car and Truck Forums

mr2_dori · 06-23-2006, 09:46 AM

hi, i have a question. i have the super sequentail bov and i keep hearing that this bov has to be tunned. is this true.

***MRQtwinturbo*** · 06-23-2006, 10:32 AM

how would you tune a BOV??..i have same one...just installed and using it....

JekylandHyde · 06-23-2006, 10:59 AM

The one you have should not need anything done to it.

Most aftermekt BOVs are based on a spring design and it is possible that the spring tension would need to be adjusted.

mr2_dori · 06-23-2006, 02:46 PM

because the sound i wanted was the butterfly or double chirp sound. im only getting that when i dont really get on the car. i would say around 3500 rpms and down it happens. is there a way that i can have it do it all the time.

mr2_dori · 06-25-2006, 05:00 PM

how do i adjust the spring on this bov if i can.

clem · 06-26-2006, 07:25 AM

theres a little spring on the back of it you`ll have to use a pliers and adjust it but if u dont adjust the spring right the car might stall every time u boost the car!

CentralPower · 06-27-2006, 02:09 AM

mr2_doribecause the sound i wanted was the butterfly or double chirp sound. im only getting that when i dont really get on the car. i would say around 3500 rpms and down it happens. is there a way that i can have it do it all the time.06-23-2006 11:59 AM
I know exactly what you're talking about, same reason I bought mine. The bad news is NO, you can't have that sound with a stock turbo set-up. And yes, you do have to adjust the spring pressure, I believe most stock 2's are like mine and end up being tightened most of the way down.

I've been told that the 'flutter' that sounds so cool is actually not a good thing. I've only noticed it on my ride when it was really cold out... A local friend of mine is running the HKS SSQ and gets the flutter every time on his RB20, bastard.

mr2_dori · 06-27-2006, 09:45 AM

so then there is no chance to get that sound all the time. and why is it bad for the car if it does do the chirp sound?

numbone · 06-27-2006, 01:05 PM

this butterfly effect or double churp u speak of does not just come from the BOV. this sound u want to accomplish is the sound of the turbo compressor surging. which is one of the purposes a bov is made to relieve from happening. this happens when your adjustment on the bov is too stiff for the current boost pressure so it does not release air properly.

i think your best bet of getting this sound is to recurculate a blitz BOV. but remember nuthin is really as good as the oem BPV or the SSQV II recurculated wont hurt.

Piddy · 06-28-2006, 04:28 PM

I've noticed on my car the sound has a lot to do with the amount of boost being ran. When I'm on low boost... the blow off sound isn't too loud... when I'm running higher boost.... DAMN. I'm running a stock bpv recirculated.... still makes a good amount of noise.

Steve · 06-28-2006, 05:41 PM

I involuntarily managed to test a bunch of bovs and the ssq is probably the best that I know of for variable functionality and picky ecu's. Im not a huge fan of the noise but dont really have the option of a recirc.

blitz-leaks over 18psi unless you tighten the shit out of it then you get that cool flutter sound but thats bad

apexi-annoying and car stalled, unable to set for my application (uncirc)
turbosmart-excellent
turboxs-stuck after 2 weeks

I say stick with the HKS but set it to be functional, who cares about the noise

The best sound is the compressor surging. This is best accomplished if you run a straight pipe with no BOV.
But dont do it, your turbo will only last about 2 weeks

CompanyFlow · 06-30-2006, 02:20 AM

Why does the turboxs BOV suck?

***MR2Jedi*** · 06-30-2006, 02:26 PM

Quote:

Originally Posted by CompanyFlow

Why does the turboxs BOV suck?

I've been running mine for over 2 years now. but everybodies engine is different. I haven't had any real problems...though I think it's responsible for the ocassional backfire...