Originally Posted by Focus_RS1658
If you want Chatter Sound(Stalling of the Blades) on the FRS then you need the GGR dump valve which has the K&N fliter built in...
But DV just make the car drink the petrol more and you loose a few BHP too take it to a dyno and try with the DV or then with the Re-Circ..
GGR Dump valve are crap... I had one on my car for about an hour the f___king thing would stop stalling. Put the baileys one on and everything is fine again well apart frm the over fueling and using shit loads of petrol
Jim