To be 100% honest, I don't know for sure if the SRT-4 is MAP based rather than MAF based, but I suspect that this is the case since each new upgrade from Mopar includes a new MAP sensor...
In any case, the stock BOV sucks. It's got all of about 2 bucks in parts into it, and the stock diaphragm is really, really weak.
We don't recommend a BOV on a MAF metered car, but people use them anyway...
With a properly designed BOV the worst than can happen on a MAF equipped car is poor part throttle response (i.e. when you get into it and back out of the gas the car will lurch a bit), and it will run rich between shifts. On some cars however, this will trigger a "limp-mode."
We'll know more soon...
-Nathan
www.turboxs.com