Blow-off Valve Location?

[Chaos the Xile]

Which side do you have blow off valve on? Hot or Cold? I have mine on the cold side. Lets see it post up pics of your blow off valve and which side you have it on!

[nizmo zilvia]

I dont even think it matters? I've seen them on both sides but I would think the cold side would be better as its gathering xx amount of air into the intake and letting it out as it needs to.

[Kansei240sx]

I am going to use two of them becuase the cold side is quite alot shorter and has less pressure build up than the hotside which the piping is about 1 to 2 feet shorter. See the long blue pipe on the hotside?Thats where another one is going....

[rb240det]

Which side do you have blow off valve on? Hot or Cold? I have mine on the cold side. Lets see it post up pics of your blow off valve and which side you have it on!

I had mine on the cold side. I'm not too sure that it really makes a big difference which side it is on though. Not really sure what this has to do with RB's...

[Joe]

location dosent matter.

the pressure differential between sides of the IC has no bearing on that because there is a sudden, large, pressure increase when you close the throttle (how a BOV works.)

[Kansei240sx]

location dosent matter.

the pressure differential between sides of the IC has no bearing on that because there is a sudden, large, pressure increase when you close the throttle (how a BOV works.)

Yet i still have a large amount of compressor surge on hotside...

[Joe]

what kind of BOV? and what kind of turbo?

[lucky7]

you probably just have to adjust your BOV. its too stiff, its not releasing the pressure quick enough. therefore you get surge.

[Yellow4g63]

I had mine close the the Throttle body. Worked good for me, I had a little surge problem till I adjusted the bov.

[Spazz]

I had mine close the the Throttle body. Worked good for me, I had a little surge problem till I adjusted the bov.

so does mine, but i have the stiffer blitz bov spring, flutters like 3 or 4 times when i shift.The adjustment screw is all the way loose.

[lucky7]

sounds flippin' sweet though. haha.

is that pretty common with the blitz? i will be running a tial.

[Chaos the Xile]

I am going to use two of them becuase the cold side is quite alot shorter and has less pressure build up than the hotside which the piping is about 1 to 2 feet shorter. See the long blue pipe on the hotside?Thats where another one is going....

Ok I didn't know if it mattered which side, thanks Kamin. I have a Greddy Type-S BOV and a GT35R turbo w/ V-Band. The screw that is on top of the BOV is spripped out, so I need to get another one, I may get TiAL 50mm or HKS SSQV, Don't Know yet, but I need to get it tuned so it stops dying at idle, and so i don't have to recirc my BOV...

[Yellow4g63]

so does mine, but i have the stiffer blitz bov spring, flutters like 3 or 4 times when i shift.The adjustment screw is all the way loose.

Spazz put back in the spring that came with it. I too had the stiffer one and and it would surge no matter how lose it was lol. I don't know if I'll need the stiffer spring with the SC61. I hope so that damn thing cost me $40 lol.

[Kansei240sx]

ARC bov, and Stock turbo.

The spring if its to loose leaks under boost, if its to tight, it doesnt blow off till high rpms so i surge all time above 15 mmhg in vac

[krayton]

Yet i still have a large amount of compressor surge on hotside...

my stock bov couldnt catch 1.2 bar from my t3/t4 on the hotside. moved to coldside no problem.

from what i read it didnt matter. but from my own expierence i use cold now.

[240TweakerNewbee]

Mine is on the hot side. I don't think it matters. Air pressure is air pressure... like someone said its how the BOV works. As long as it lets pressure off before it gets back to the turbo, thats all you can expect it to do.

[Chaos the Xile]

I always see them on the hotside on SR20, very rarely do i see them on the cold side. but w/e. I may just leave it on the cold side.

[Reignman]

Is anyone running both the MAF and the BOV on the cold side? I was planning to put the BOV right after the intercooler and then the MAF. I just didnt know if they would be to close together 3-4 inches apart.

[BigPar]

I'm going to get a mitsu 1g HKS SSQV adaptor flange to put it in my stock location on the ballin *** intake manifold cross over pipe. Them I'm going to sprinkle diamonds on it, becuase that's straight BALLIN!

[27RB240]

I'm going to get a mitsu 1g HKS SSQV adaptor flange to put it in my stock location on the ballin *** intake manifold cross over pipe. Them I'm going to sprinkle diamonds on it, becuase that's straight BALLIN!

Too much Chapelles show for you young man...Stop watching it I demand it!!!!

[projeks13]

anybody had any issues with a sard r2d2? and why would you keep two bov's on. i've seen this a couple times and never had it explained to me

[nizmo zilvia]

You only need 2 BOVs when you have a TT setup. Because both turbos are making so much air pressure it requires 2 BOVs.

[projeks13]

true, but i've seen ppl keep the stocker on the cold side while still placing an aftermarket on the hot side (all to my knowledge were on single turbo setups)

[Chaos the Xile]

true, but i've seen ppl keep the stocker on the cold side while still placing an aftermarket on the hot side (all to my knowledge were on single turbo setups)

I've seen this too but I'd imagine you'd get some sort of leak from somewhere.

[smiley]

anyone heard the greddy type r... thats wat ima get it sounds nice

[Chaos the Xile]

Yeah I have a Greddy Type-R Now, but i'm getting ready to switch it out fot the Type-RS, cause the S was leaking...