Turbosmart Dual Port BPV With Stillen Kit

x2o

Okay so here's the current situation.

Valve is all the way tightened, can't get enough leverage to loosen without pulling it out and adjusting. Drove it to work as is with the valve all the way tight. Car is still dropping below idle (to around 500rpm) when coming to a stop after cruising in the city, then its a bit jumpy until it settles at idle again. Also sometimes when at part throttle,the valve opens up around 4000rpm and I really have to push the accelerator to get it to close.

Are these symptoms of being too tight ? Or do I need to add spacer to the blue spring for more tension?

Edit: also got p0131 and p0151 too rich but I think that's from when I first started adjusting it from full soft. Reset to see if it comes back

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2011 370z Supercharged Sport Touring 7AT
Stillen: Supercharger Kit | Cat Back/TP | Oil/AT Coolers
GTM: Hardened 7AT (valve body+torque converter)
Whiteline: 27mm Front | 24mm Rear | Swift Springs

EVOHUNTER

What? it shouldn't open at 4000 rpm, do you have it hooked up right? at 4000rpm you have no vaccum, so it shouldn't open. inless boost is pushing it opened, but I doubt that,

This is because its too tight, its not opening at idle, your ECU is reading low air. The ecu Is dumping fuel, causing a rich fuel trim.

You can take the BPV right out, hook it up to your manifold line, take the cap off, start the car, adjust until the piston is fully opened. put the cap back on. put the BPV back on the charge pipe, discount your battery for 15 mins and hook it back up.

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x2o

100% sure it is hooked up correctly, used the same hoses that were on the Bosch valve. Might have to swap the Bosch valve back in and try adjusting it the way you've suggested, seems like much less of a headache.

The fact it was opening over 4k rpm is what made me think I had to go tighter. My logic told me the boost was overpowering the spring. I guess this is wrong though? Or maybe the blue spring is too soft?

I'm on stock cats, last dyno showed just over 9lbs of boost.

Before lunch I'm going to take a look at the valve while its idle and see if it is indeed closing. Pretty sure its holding open though.

Really appreciate the help guys

Edit : seems at the current tight setting the piston is about 80% open at idle. I can see a bit of it peeking through the hole. What's weird is when I go softer, it idles worse. Should I reset the computer (disconnect battery) after each adjustment?

__________________
2011 370z Supercharged Sport Touring 7AT
Stillen: Supercharger Kit | Cat Back/TP | Oil/AT Coolers
GTM: Hardened 7AT (valve body+torque converter)
Whiteline: 27mm Front | 24mm Rear | Swift Springs