Gtr Bov On Gts-t

[limpus]

My gtr bov worked fine and is still working fine...without any modifications...its possible your bov isn't working properly...

[TTT]

Some questions for you.

1.) How much power does your car make?

2.) How much boost pressure do you run?

3.) What turbo?

4.) How big (in diameter) are your intercooler pipes?

5.) What do you seen if you take the plum back hose off and free rev the engine from the engine bay? Does the bov open and vent? (Yes it will probably stall after, but it’s just a test to see if the bov is opening.)

6.) Have you tried to run a new length of hose Straight from bov to turbo intake pipe?

The reason for all the questions is this.

Extra boost/airflow from bigger turbo will require more air to be vented on gear changes (obviously)

Bigger diameter intercooler piping and intercooler means even more air is in there.

Back on my S14, when I fitted a FMIC, the stock bov would not flow enough at 1 bar boost. I would get the well known sr20 flutter on gear changes or back off from accelerator.

I then decided to test a GFB plum back bov.

Same result.

Odd….

So then I vented the gfb to atom…. No more flutter.

Then I had a look at the bov plum back return line. It goes in to a small flat section over the front of the engine block.

No way it will flow enough..

Got new hose from front of bov all the way across to intake pipe.

Problem solved.

I suggest you try that telstar tx5 radiator pipe size to go from bov directly to the intake pipe where the plum back pipe fits..

It won’t cost you much.. just some time..

Cheers

[abcent]

1.) How much power does your car make? around 250kw

2.) How much boost pressure do you run? 9psi on low 18psi on high

3.) What turbo? Hi-flow (unsure of specs)

4.) How big (in diameter) are your intercooler pipes? 2.5inch-3inch? full HKS cooler kit

5.) What do you seen if you take the plum back hose off and free rev the engine from the engine bay? Does the bov open and vent? Yes, even went for a drive like it, no reall flutter (did occassionally flutter just once)

6.) Have you tried to run a new length of hose Straight from bov to turbo intake pipe? nope, that'd be a long bit of hose, would have to buy a length of silicon tube or something to do that, an that stuff aint real cheap. but I see your point

[TTT]

I saw on an SR20 conversion in to an R32 or maybe a cefiro..

The person (I think it was Meggala from these forums from many years ago) had a bov welded to the intercooler pipe in a position where he then had a stainless steel pipe (same diameter as the bov venting side) going from the bov directly across to his stainless intake pipe.

That’s extreme but it would definitely flow enough back to the intake..