Originally Posted by zaki
I have a s1 rs turbo which came with a diaphram dump valve, i changed it to a bailey twin piston. and 4 some reason on idle it kept cuting out, when i changed it back it was fine. any ideas why it was doing this.
R u sure it's a twin piston type DV26(I believe) as it sounds that it's a DV24.. which do affect the idle on cars running fuel metering units,failing that diaphram could be split
or do as above also
