Anyone installing a turbo kit on your car should know it need a BOV. It's simply not encluded because of legal reasons.

 

Nissan is buying me a new bumper, while it is off I am putting a BOV right there where the IC pipe is.

 

shaun_walsh is right though that the Greddy didnt put one on their project car. i went back to the article in turbo mag and i didnt see one and there wasnt a mention of one. i just found it stranged that it wasnt put on and why Greddy thought it wasnt needed

 

what kinda legal reasons? Besides if grddy who desgned it for their car and R & D 'd it why would you think they wouldnt know after-all they made it to be realiable as an aim wouldnt you think?

 

I had personally talked to Greddy Tech and they told me the reason they didnot install a bov on their R&D car was because they didn't felt it was needed. That was all they said.
Legal reason is imo if the kit did include one, the kit wouldn't pass CARB exempt approval due to externally vent gases. ( Air/fuel/gas, whatever...)

 

A BOV only vent compressed air is all. I think the wording in the CARB regulations was just done wrong.

 

Tell me about it...Government regulation is a B$%#$.

 

Guru: Depending on what car, the setup, and where in the setup the BOV is... it can ADVERSLY effect emissions. I am sure they would rather just make an externally vented BOV illegal than have to figure out in each cars application if it should be legal or not.

 

Felt this thread got sidetracked with BOV discussion (althought still useful info).
I am curious about how shaun_walsh's turbo is doing. Any updates, pics, causes of turbo not running properly?

Rgd,
Mickey

 

A properly placed BOV will NOT adversely effect emissions. If the BOV is placed after the MAF sensor, the ECU will never know when metered air is being vented, and thus will unknowingly increase/keep steady the injectors' duty cycles instead of lowering them, because for all it knows it still needs to combust fuel with the air that has vented and left the intake tract. This creates an overly rich condition every time the throttle is released from load, and causes the fireballs out the exhausts. If the BOV is placed before the MAF (or after the MAF with vented air being recirculated back into the intake tract via a tube) the ECU will have a MUCH more accurate measure of how much air is in the system, and nothing bad should happen to emissions.

 

but the point is.... externally vented BOV is illegal with C.A.R.B.
Let's get back to the original subject.

 

i am extremely aware of how it works.

please reread my post as i never said that it couldnt be done to not have a strong impact on emissions. I said "Depending on what car, the setup, and where in the setup the BOV is... it can "

... they arent going to want to inspect everyones BOV to make sure they installed it in a enviromentally sound way... and BTW... MOST turbos cars with BOVs DO get the negative effects, no cars from the factory boost thru the MAF... so this is like the only exception.

 

Can I ask who did the install and how long it took?

 

Greetings,

The install was done by SP Engineering (www.sp-power.com). The key engineer they want to look at my car was out until this Monday (1/19) so I should know more for sure on Monday or Tuseday. I will let you know. Sorry for the dealys, but I can only go as fast as they tell me things.

Shaun

 

Your car is being worked on in the City of Industry? Thats funny because I was just considering them for some work on an install. My parents live about 20 minutes from them.

Let me know when you find out more info. Thanks!

 

First,

I want to thank the guys (John and Eugene) at SP Engineering for all of their help in getting things done right. The problem turned out to be a bad fuel injector on cylinder #5. They spent two extra days of mechanic time at no cost to me to take it apart and put it back together running tests.

Second,

The car is running great and the Dyno came back at 352 RWHP and 323 torque. My base line before the upgrade was 246 RWHP and 242 torque.

Third,

I am trying to post pics with this, I hope it works. I have never had one of my pics load.

Shaun

 

Great news Shaun!

 

Great news pics when you can...

 

Thats pretty strange..A bad fuel injector, thats not to common on a newer car...Did they say what the problem was with the fuel injector and was it a Greddy injector???

 

Hey,

The injector was one of the new ones that came with the Greddy kit. They also found out that the injector clip was rubbing against the fuel pump and they had to move things a bit and they "shaved" the clip a bit to stop the rubbing on the fuel pump.

I am still having trouble with the picutres. The picutre my camera is taking come out to about 600K. How do folks get the size down?

Shaun