Originally Posted by
milesy
The twin piston stops the car from stalling at idle where as the single piston everytime you come to a stop the car wont idle it will just stall!!! i think thats it but to be honest you are better off running without one as they are GAY LOL
i see i see, the boy i bought this rs off has another and it has a single piston in it and she doesnt stall or anything (this is the dump valve i was going to buy off the other car) so i must get a chat to him to see before i make my mind up.