Need help with car idle

[wilddog]

When I am at a stop, in neutral, I idle at around 1K. When I rev the engine the rpm needle goes up then comes down below 1K and the car occasionally stalls. Car sometimes also stalls under hard braking. I tried resting the ecu by connecting the negative and positive battery terminals, but it has not helped. Any Ideas???

Notes:
1: Previous owner installed a greddy bov vented to the atmosphere
2: car has a 6 bolt swap

 

[GSX93DSM]

I would check for vacume leaks and check and see if anywires looks out of place due to the 6bolt swap.

 

[bluetlr2001]

Might want to try adjusting your bov. And try recurculating it not venting. But try adjusting it first. My apexi biv done that when i first got my car

 

[jonheslop]

I would definately blame it on the BOV. Change it back to recirculate.

 

[Nicarlo1]

I would definately blame it on the BOV. Change it back to recirculate.

my buddy had a similar problem and it was due to his BOV not recirculating. I suggest change to a BOV that recircilates.

 

[wilddog]

Might want to try adjusting your bov. And try recurculating it not venting. But try adjusting it first. My apexi biv done that when i first got my car

Its a greddy type s bov. When you adjusted your bov, did you set it harder or softer?

As for recirculating it. Im gonna get a welder from my work to pop a hole in my intake after the maf sensor, and weld a flange. Then run a hose between the bov and the flange. Is this plausible? Cheers

 

[zippyshoe]

I would definitely recirculate that Type S. You should have no trouble recirculating that BOV. If you have an aftermarket intake that does not already provide a port for recirculating, which I assume is what you have, then you should be able to weld a flange to recirculate. If you had the money, you could also buy an intake that already provides a port to recirculate, which might be a cleaner solution. Whatever you decide, just make sure all your connections are air-tight.

 

[bluetlr2001]

When you adjust it tighten it some see if that helps.

 

[wilddog]

So just to be certain, I should weld a recirculation flange on my intake right After the maf. Correct?

 

[zippyshoe]

So just to be certain, I should weld a recirculation flange on my intake right After the maf. Correct?

If you decide to recirculate your BOV using your existing intake, then, yes, you will want the flange to be AFTER the maf (aka between the maf and the turbo inlet). This is the case because the ECU has already accounted for this recirculated air.

 

[wilddog]

If you decide to recirculate your BOV using your existing intake, then, yes, you will want the flange to be AFTER the maf (aka between the maf and the turbo inlet). This is the case because the ECU has already accounted for this recirculated air.

Thanks So Much

And thanks to everyone for their input