Think ive sussed my running problem

[audiman]

i WANT TO BE THE GINUEA PIG!!

I use the std bosch DV and that gives a mental rally slag sound thro the k+n cone filter!!!

Need to sort this misfire crap out. Dont want to put a rod out of the block

[SteveH]

@Martinjs... My Dv is installed as standard with the boost pressure acting on the bottom of the piston rather than on the side. I haven't tried it turned round because my 4mm vac hose is a little too short. I'll give it a go when I get some more hose. Did you notice much difference apart from the sound?

[martinjs]

mine is fitted with boost pressure @ 90 deg to piston(opposite to yours) thought this was standard way?
it was surging when it was fitted as yours is. no performance differences, but sounded excellent, as apposed to sounding like someone breathing out very fast with mouth open (only way i can describe it..lol)

[SteveH]

Hehe, I moved the DV so the pressure is now acting on the side of the piston like yours. I thought this was the non standard way of fitting them :confused:
My subtly audible " Tshhhh" has now become a "Pfftttt"

[audiman]

Yeah thats the way i have mine, boost pressure makes sure that the DV stays shut, no boost leak from that! Its a mental noise and i love it. Have heard it the other way round and i hate it

Sounds more like an S1 rally slag now.