dmx75 Posted July 5, 2007 Share Posted July 5, 2007 are dump valves a good idea or not? i have people telling me they are an some saying they are not :S, so whats the best option any 1, have em or not to have em? Quote Link to comment Share on other sites More sharing options...
hiten55 Posted July 5, 2007 Share Posted July 5, 2007 all turbo cars have them, you just need to decide whether you want to hear it or not. recirculating ones you cant hear. if your going BPU (do a search) id say you definately need to uprate the standard one. by the way Quote Link to comment Share on other sites More sharing options...
dmx75 Posted July 5, 2007 Author Share Posted July 5, 2007 oh rite, but i thought that with dump valves the turbo is constantly running so that you dont have to wait for it to kick in(2000 revs then the second at about 4000) or is some 1 telling me porkys? Quote Link to comment Share on other sites More sharing options...
Clarkey Posted July 5, 2007 Share Posted July 5, 2007 if your going BPU (do a search) id say you definately need to uprate the standard one. No you don't for BPU. There is no real need to change from the stock recirculating one - except for a Whooshing noise. If you went APU (Single turbo) then you'd need one. Quote Link to comment Share on other sites More sharing options...
Clarkey Posted July 5, 2007 Share Posted July 5, 2007 oh rite, but i thought that with dump valves the turbo is constantly running so that you dont have to wait for it to kick in(2000 revs then the second at about 4000) or is some 1 telling me porkys? No that's not it either. It gets rid of the build up of air-pressure in the turbo when the throttle is closed. Ian explains it here http://www.mkivsupra.net/vbb/showthread.php?t=35947 Quote Link to comment Share on other sites More sharing options...
dmx75 Posted July 5, 2007 Author Share Posted July 5, 2007 oh stuff it then, dont want it to sound like a chav car! thanx guys Quote Link to comment Share on other sites More sharing options...
hiten55 Posted July 5, 2007 Share Posted July 5, 2007 No you don't for BPU. There is no real need to change from the stock recirculating one - except for a Whooshing noise. If you went APU (Single turbo) then you'd need one. i stand corrected oh stuff it then, dont want it to sound like a chav car! thanx guys watch it!! :D:D Quote Link to comment Share on other sites More sharing options...
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