Hi im currently using the bailey piston dumpvalve with no problems at all, but the other day i heard a erst with a different sounding dump valve like a rally car one like a chatter sound instaed of pissstttttt!!, i know the bailey one wot i have is ok and the best for idleing problems but its bugging me on which dumpvalve it was, and it werent a efi engine in it either!!.
Thanks

 

should have had an efi engine in it. Thats usually the sound of the wastegate shutting i think as someone mentioned on this site sometime ago. You dont get the sound in ERSTs because something to do with the metering unit i think. I think thats what it is

 

its deffo a erst engine coz i know the bloke who put in then he sold the car the other day, and it appeared the other nite with that sounding dumpvalve!! or wastegate thingy!!

 

na sounds like waste gate escorts do it some times but you have to drive slow no road noise and depending on how its set up you mite hear it butvery fant

 

I have a forge motorsport dump valve and I have both chatter and woooooosh on my S2 running 220bhp tho....

 

i have a stage 3 hybrid and no dump valve and the chatter is quite loud for s2

 

the chatter sound is from the compressor wheel stalling as the air is forced back through it when you lift off ( it has nowhere else to go with no dump valve ) . you can hear this noise coming from the induction kit. as far as i know you shouldn't get it on an mfi car as the flap inside the metering unit will close when you lift off,

 

I hav a LeManns Dump Valve on my S2 which does the usual bus psssshhhht, but when i bout a bailey twin piston DV, and when i fitted it it made a funny noise when it dump instead of the pssssssshht , so i took it back off

 

unless he removed the hose from the turbo to metering unit!!!some1 once told me this was the way to do it!!! soon told him the error of his ways!!!! jesus,u have to be mad to do that!

 

if you done that on a s2 it would not even run

 

as if ur selling the stealth rob

 

yep im goin japanese now ,i need a change from fords for a while

 

i took the bailey dump valve off my girlfriends series one and the wastegate chatter is very loud its running 16 psi if that helps

 

rob, bet ur gonna get one of those starlet gt turbos whats on your garage!

 

nope ,mr2 turbo or a pulsar gtir , havent decided yet

 

Just breezing through might have a TurboSmart external wastegate fitted. This along with their Supersonic dumpvalve leaves an impression.