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I can't see how you could truly tune for a BOV while still running on the stock MAF sensor system. Maybe, MAYBE, if you converted over to a MAP sensor you could somewhat tune with a BOV in mind, since a MAP looks at manifold pressure instead of airflow (someone correct me if I'm wrong). However, you'd need a different EMS that can accept input from a MAP sensor and of course the tune itself. That all adds up to a lot of moolah and hassle which in my mind isn't worth it just to make your car run slightly less rich during shifts with a BOV.Originally Posted by frathouse87
I highly suggest you quit clinging to the idea that there just has to be some way of getting a BOV to not make things rich in between shifts. If you sit down and genuinely study the differences in airflow that occur when the BPV and BOV open during a shift, and just how a MAF-based EMS controls fueling, you're gonna see that it's really really tricky, if not impossible to do, and hardly worth it time and money just for a stupid pppsssht noise.
Not likely you'll get much in the way of any power from intake, even at Stage 2. Heck, even Cobb themselves admitted that their own intake doesn't do much of anything. You hafta be moving some serious air and have a good tune to match in order to take advantage of an intake, and Stage 2 is hardly what I would consider moving some serious air. Part of the problem is I don't think you (and most people who continue to press the issue with intakes) are taking into account the major difference between turbocharged cars and naturally aspirated cars. Naturally aspirated cars have to breathe on their own, they don't have a turbo around to forcibly ram air down their throats and thus a high flow intake can really help a NA car to breathe the best it possibly can with the least amount of restriction. On the other end of the spectrum with a turbocharged car, the turbo crams air into the engine and does all of the breathing work for the engine, and unless you have one hell of a restrictive stock intake (which the WRX does not) there is little, if any power at all that is to be gained from an aftermarket intake since the turbo has no problems sucking in air on it's own. Noise is likely all you'll ever get out of an intake given the power levels that you'll be running at.
What are you present mods? Do you have a catless uppipe and TBE yet? An uncorked Subaru boxer engine sounds awesome, and is by far the nicest sounding 4-cylinder I've ever encountered. If you focus on getting those things taken care of first, I think you might find that your car sounds so good that stupid things like show-off valves and noisy intakes will suddenly seem extremely insignificant by comparison.
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