Atmospheric BOV Install Questions...

[RB20 Mistake]

Ok I searched and found some misinformation on this subject.

I am going to be installing my HKS ssqv BOV in a few days and I cant figure out what to do with my MAF. Some people say that it should be in the intercooler piping and not in the intake for the turbo. Others say that it can be controlled by an safc2 which I will be using.

So I was wondering if anyone has any experience with using an atmospheric bov and having their car run "normal". Not running real rich or crappy idle or anything. Also, if the maf goes in the intercooler piping then where? Does the bov go in-between the throttle body and the maf or the maf and the intercooler?

Sorry for the 20 part question, but I dont have an idea where to start and I just need some input from someone that has gone this route. Thanks alot for the help.

[SHIFT_Lock]

Well in a blow threw maf set up, the BOV should be on the hot side and the maf on the cold side.

If you plan on using a safc 1 or 2 then a blow threw maf set up is not needed. Just set up the dec air function. The motor will no longer stumble or try to die or in some cases "buck" when going from full to mid throttle.

Some one on here posted the dec air settings needed. The SAFC way seems to be the better way.

Also most people seem to think a bov should be closest to the turbo as possible. No closer than 6 inches I would recommend.

[fallen180sx]

hey, im using the ssqv as well.. i put it on the hot pipe, left the maf alone.. and running it vented.. no problems here. HKS Super Sequential Blowoff Valves are dual stage pull type relief valves that by design do not leak under high boost conditions or under idle vacuum and is actuated by pressure alterations to ensure a quick primary and secondary valve response.

[RB20 Mistake]

Ok great, thanks alot for the inouts guys. I will just leave the maf in the intake for the turbo and use the afc.

Also SHIFT_Lock are you sure I should put the bov so close to the turbo? See I used to be a Honda guy and I know there is a difference.. map vs maf, but I read somewhere on honda-tech that the bov should be on the cold side or at least try to keep the bov as close to the middle of the intercooler piping as possible. Is this wrong or atg least differant with nissans?

Thanks alot for the help guys.

[RB20 Mistake]

[Carl H]

idealy you want the bov/bpv as close to the THROTTLE body as possible, not the turbine.the concept of a bov/bpv is to vent boosted air that is going to bounce off the throttle plate when the throttle is closed, thats what causes compressor surge.

[narfdanarf]

idealy you want the bov/bpv as close to the THROTTLE body as possible, not the turbine.the concept of a bov/bpv is to vent boosted air that is going to bounce off the throttle plate when the throttle is closed, thats what causes compressor surge.

werd, as close to the TB as possible.

[Wykid 240]

But, if it's put close to the turbo, it will not have compressor surge. Because, all the press. that'll be coming back will vent out.

Just my thought. . . .

-Jeramy

[onefastrb26]

It will vent out either way. If it is close to the turbo though, the air will travel back though the intercooler just to be vented out. If it is close to the TB, then it will be vented out immediately.