Hello...

well a few years ago I read on this forum that it's best to put a recirc dumpvalve, like the original, to not lose boost...

But a friend of mine, who has had a few 20VT coupe's... claim it doesn't matter, and that a Dump to air works every bit as good, but you get the added bonus PSSSSSSSSSSSSSST

As my forge dv006 is getting old... 2years old, I was wondering... is it best to refurbish this one or could a dump to air, forge dv004 be used without any noticable performance drawback ?

Thanks