Hi I have the above on a WRX my 2004 other mds are AEM short ram air filter and a exhaust back box I dont think its been re-mapped its only fault is over revving on gear change and reading on here I probably need to be rid of the BOV is it a case of buying a new original one and bolting it on, there is one small pipe from valve as far as I can see is anything else modified to fit this? I bought the car with the mods. thanks

 

Hi there at first check for error codes(CEL-Check Engine Light),if you have CEL,first option will be because you don't have mapped AEM Air filter mapped at moment.
I've run long time Forge DV without problem and my car has been not mapped for DV.This may cause your AEM short Ram Filter or even MAF(but MAF on new age are robust,but who knows without closely inspection)


Jura