I've fitted a piston type dump valve to my EFi managed escort turbo and the only problem seems to be that it hisses all the time until it comes onto boost I can't say I've ever noticed this before when I've been in other turbo'ed cars.

Anybody got any idea whats up?

Cheers,
Dave.

 

you running efi and you want a dump valve?!

WHY? chatter so goooooooood!

 

you need a stronger spring in there mate, give forge motorsport a ring, they have about 5 different strength springs depending on your boost level.

 

Or just file the dv in a drawer in your garage.

 

Or file it on Ebay!!

 

wish i had EFi! chatter all the way chuck the dump valve out the window

 

I'd prefer chatter over the DV anyday, but if you insist on the DV it does sound like a weak spring as already mentioned

 

Or a boost leak in general, either way file the chump valve in the bin

 

Ok then I'm a bit new to turbo cars, whats chatter??
And why does EFi make a difference?

 

Chatter is the noise made when the wastgate open's and closes, Fiesta Turbo's chatter well because they have no metering unit, as do Cossie's. I used to run a dump valve on my RSt, but it chirps a little now so I flogged it on e-bay. Depends on your taste really m8.