ok so i put on the hks bov. i took off the tan nipple bpv cover and replaced it with the hahn block off plate. ran the hose from bpv to hks. now dejons instruction say to keep the bpv nipple on there and install a new hose from the black solenoid valve on the intake manifold to the stock bpv tan nipple. i didnt do that i just threw on a block off plate is this the soultion to my werid sounding hks, cel p2261, and compressor surge like a mo fo.

dejons instructions:
1. Remove the hose going to the factory Compressor Bypass valve (locate the tan plastic cap on the turbo above the compressor inlet) See pic at top of this page.
2. Connect this hose to the new BOV.
3. Locate the rear hose connected to the black solenoid valve on the intake manifold left side. See pic below. Install a 3/16" plastic "T" and 3/16" fuel/vacuum hose.
4. Connect the other end of this new hose to the tan nipple on your factory compressor bypass valve.

(i dont think i did steps 3 and 4)

 

I didn't put a Block-Off Plate on mine, and it runs perfect! But unfortunately I don't have a picture that I could throw up here of my BOV install, which Negrita_ SS did for me. He is the man! But yes, you do have to "t-split" the hose with those little t's supplied with the kit.

I would take out the Block-Off Plate, and do steps 3 & 4, and you should be ok...

 

So you didnt follow the instructions, and are wondering why its not working right?

 

I never used the T splitter things and I'm running fine. I'm going to put them in though because I hate half assing **** with my car.

 

I didn't follow the instructions and used the block off plate. Worked fine for me when I had it. He probly didn't install something right

 

Yeah, I have the black off plate on with the vacuum line that was connected to the BPV to the BOV and it's just fine. I'm gonna put the T split thing in though just because.

 

So many ways to do this..... Haha. I'm glad I had NegritaSS put mine in for me. I would have certainly screwed mine up.

But I just LOVE it!

 

some thing not installed right i had the HKS never had a problem i moved up to the tial 50mm HKS was to loud for me

 

The Tial isn't as loud as the HKS? It sounds like a loud whistle. I'm getting bored of my HKS.

 

im at 21 psi and not that loud sound more like a sneezee every time it go's off i and up laugh the look on the ricer face

 

Silly question but you did leave the black rubber piece inside there didn't you? If you did the bov should function fine, whether the ecm likes this is another story.

 

The ONLY reason you would use Dejon's instructions above would be if you were NOT using the Block Off Plate. If you have the plate then you don't need to T-split your vac lines. It's very simple to install.

1.Take vac line off of BPV.
2.Take off tan BPV cap.
3.Install Hahn block off plate leaving the stock spring and rubber seal in the BPV.
4.Take vac line that was connected to the BPV and hook it up to the BOV nipple.
5.Secure vac line to BOV nipple with ziptie, pressure clamp, etc.

If you have the Hahn block off plate or some other form of this plate then the directions above should work perfectly.

 

Thanks for clearing that up. I didn't leave the spring in there but I left the rubber piece. Should I put the spring in?

 

Im thinking about going to an atmospheric BOV when I get my charge piping. Can we get some sound clips up? I dont want something obnoxiously loud, this car is my DD.

 

The only clip I have

http://www.youtube.com/watch?v=vKuM1yxGZl4

 

I left the spring in, b/c without it...I threw CEL P2261...put the spring back in and CEL went away.

 

Weird... I don't have it in and I never threw a code. Was there any performance decrease when you didn't have it in?

 

Are you sure its not BOV flutter, im pretty sure those BOVs can sound like that. Anyways, if you really believe its compressor surge you should see it on HPT logs. I just don't understand why more people don't go with Synapse Engineerings BOV.

 

Just threw the CEL...changed it around and away it went...only drove it a few 100 feet before it came on so I didn't get to see any performance differences.

 

well ok i put everything in w the block off plate. The car sounded like it had hks and then old sound of the dejon spring, after the hks noise. So i took out the spring and same noise hks/kicking a puppy. I threw a CEL (p2261). I put the spring back in, still same noise /same cel (by the way teribble compression surge sounds like a trillion piggons). so i opened the hood and reved it. I could hear the kicking puppy noise coming from the turbo area and the hks from the charge piping. so now the car is at a shop, becuase this is redicolus. I told them to do it the dejon way. If the spring is in there, why do i still have the CEL p2261. I am so confused. Do you guys think it was the weld, because its a shitty weld on the injen cp.

The CEL will come back on just give it time. Same **** happenes to me.

 

Pics please

 

gotta be careful when venting off to atmosphere in a MAF car. It seems fine with the HKS, but with my Synapse Engineering BOV, my car would jerk as the computer was trying to figure out where all the metered air went. My flange is 1.25" vs. 1.00" for HKS (correct me if im wrong). I believe my BOV has a higher discharge flow rate (which i believe is better for performance) and losing more metered air quicker has caused the jerking of the car. A quick fix is to just call up Dejon Powerhouse and request a 1.25" fitting on their intake and than find some 1.25" vinyl hose ( i have some extra for cheap if anyones looking). Connect the outlet of the BOV to the intake and BAM! you're done. It runs exactly like stock but at full boost sounds a lot louder. Nothing like running to atmosphere but its noticable.

 

so was this resolved if running the t split of block off plate is better. im guessing NLS goes out the window if ur running atmospheric?

 

No Steve as long as your foot is on the floor it's not gonna affect anything

 

hmm bov's on recirc cars hmmm lol....