Is it possible to put a BOV on a D/A Supercharger? - Page 3

mgd · #31 (**permalink**) 07-23-2002, 12:07 AM

Quote:

Originally posted by Agaponi
thats right!
for a S/C with low boost (like 6 or 7psi) a BOV will be overkill... but when your using like the RMS stg 2 or 3 with high boost (11-13psi) a BOV will prevent the S/C for premature damage, and you will have more reliability. Also, remember the S/C is not the only part under stress... the TB gets too much pressure from this shifts (remember this type of TB is not designed for FI applications).

So you're saying that when I boost 16psi on my Vortech with a front mount I can put in a BOV and it will be audible?

Stealth · #32 (**permalink**) 07-23-2002, 04:57 AM

^ yes. randy(empowered) has one on his car.

Quote:

Originally posted by stimpee

You may not be able to use a BOV, but a bypass valve gives major benefits in a PD SC setup.

Steve

how would you go about doing this?

Agaponi · #33 (**permalink**) 07-23-2002, 09:25 AM

mgd, yes... it will be VERY usefull for that kind of boost... and it will be very audible... (I had a greddy BOV type-s on my GTi with 20psi, and I scared every person on the street when I shift

)

Stimpee, "You may not be able to use a BOV, but a bypass valve gives major benefits in a PD SC setup." Why are you saying this??????

THE ONLY DIFFERENCE BETWEEN A BOV AND BYPASS VALVE IS THE AIR REROUTING TO THE INTAKE AFTER THE MAF/AIR TO THE ATMOSFERE.... If you read this 100 times, you will see that neither BOV or BYPASS will outperform the other, its just of what type you want/need, depending your fuel type of system (if your only using a MAP/MAF or MAP and MAF).
Please, go search on yahoo or something and see pics of bypass valves and BOV... then imaging how they work...

mgd · #34 (**permalink**) 07-23-2002, 12:33 PM

Thanks for the info Agaponi. Is it possible to have an open atmosphere bov with our maf? I heard hks makes some a system that allows a open atmosphere bov without causing stalling or studdering. What's the best bov to get?

Agaponi · #35 (**permalink**) 07-23-2002, 01:06 PM

Quote:

Originally posted by mgd
Thanks for the info Agaponi. Is it possible to have an open atmosphere bov with our maf? I heard hks makes some a system that allows a open atmosphere bov without causing stalling or studdering. What's the best bov to get?

np mgd, you helped me too in the other forum for some recomendations

well, our system (OBDI, that comes in bimmers from 92-95) can use BOV without a problem. Problems comes with the OBDII system, because the air/fuel are more controllated by the ECU in order to be more safe for the enviroment, and it has some other sensors too that makes rich condition when shifting and at idle.
It also depends on how tight the BOV is... for example: My GTI has OBDII system (even with DBC system that is more difficult to mod.), I put a open atmosphere BOV and tighten it, so they will only open during shift and not at idle, that way I only get rich condition at shifts (backfire a lot!! with flames, even with a T3/T4E). So you can use BOV in your system without problems...

HKS makes the SSQ BOV that work like a 2 stage BOV, so you can work on the low boost release (idle) and high boost release (shifting)... a lot of people say this BOV makes the best psshhh sound in the market, I dont know about it, you can try, I have the greedy type-s and I love it, altought ill try the HKS SSQ BOV on my 325i when i put the S/C in.

Agaponi · #36 (**permalink**) 07-23-2002, 04:24 PM

Read Corky Bell - Maximun Boost
its the best book, its like the bible for forced induction systems...

mgd · #37 (**permalink**) 07-23-2002, 06:34 PM

Thanks for all of the help Agaponi! I really appreciate all the info you gave me!

I'll defenately try out the HKS SSQ BOV.

Agaponi · #38 (**permalink**) 07-23-2002, 06:51 PM

hey mgd, when you have your car ready (with the FMIC setup), could you post some pics?

mgd · #39 (**permalink**) 07-23-2002, 07:14 PM

Yeah I'll let you know when I get it finished. Thanks again for all the help

Agaponi · #40 (**permalink**) 07-23-2002, 07:30 PM

hey mgd, do you still have the aftercooler for sale?

im interested

blownm3 · #41 (**permalink**) 08-12-2002, 02:54 PM

I have istalled a Blitz bov on a vortech running 9 psi on a Mustang. The bov was extremly audible under vacumn condition because the diaphram is pulled in. It was almost too loud because it sounded like you could he every revolution of the impeller as it crossed the housing. It did sound cool but I don't think i would want my bmw that loud, I'll stick with the Bosch bypass valve.

kumanchu · #42 (**permalink**) 08-16-2002, 12:28 PM

the blitz super siren bov is loud cause it was designed to be. the hks ssbov gets the sound closest to when you actually say psssh so people are atracted to it.

personally i like the sound of the fd3s rx-7 stock bov. its not really loud; but its very smooth sounding and its kinda relaxing for some reason.

flipm3 · #43 (**permalink**) 08-17-2002, 05:36 PM

my friend was telling me that he has a BOV on his 318is, hes comming over tomorrow, so ill verify it

SSJ_Chris · #44 (**permalink**) 08-18-2002, 05:21 PM

I just wanted to add to the BOV on a Supercharger debate. I just ordered a Mini Cooper S and the stock supercharger is intercooled and runs at a factory 11.5psi. So, would a BOV be important to lengthen the life of the supercharger and give better mpg, with the excess pressure being vented out instead of slamming back into the intake???

Pouya · #45 (**permalink**) 08-18-2002, 10:44 PM

Wow, some of you guys need to make sure you know what you are talking about before you pass on misinformation to others.

I also recommend some of you to use Corky Bell's book as a place to start. However, Corky talks out of his ass a lot in that book, so don't take everything for fact. it's just a good place to start.