I have the R2D2 fitted now but i'm not sure if i have it set up right.
From the box it was adjusted right in, to its tightest. Out on the road it didn't work, it made the chattering noise it does without a DV. Keet stopping and adjusting it out half a turn until it started to make a quiet 'whoosh' eventually it was slackened off all the way but its still quite quiet and i still have the chatter.
I don't understand these feckin things :( Maybe i'm just not running enough boost? (5psi) The old normal non piston DV worked fine and was quite loud at the same boost.
Someone fix it!
-- Chet