It's been a common problem for both engines. Basically you'll have to lie to your maf with the safc, telling it that it's pulling enough air to keep it from stalling. Meaning, like if your going down a road, then shift and then come to a stop light or stop sign the car will want to cut out/stall. All your doing with the bov is keeping that air that is trapped in the pipes from being pushed out the turbo on the compressor side opening (compressor surge). The cold side will get rid of the excess air better, but you'll have a better chance of a stalling issue if you don't recirculate the bov. The hot side will still get rid of the excess air, just not as much as the cold side would. But your not taking away too much air for the maf to freak out. If it was me and I wanted to put it on the cold side, I'd recirculate it. If I wanted it on the hot side, I'd vent it to the atmosphere (not recirculate it). If you went with like a AEM EMS, you could get rid of the maf, and just go with a map sensor smile.gif