i have got a 16 st with a stage 4 spec clutch we just put in. it idles fine as long as i keep the clutch pressed but ocne i let it go and i am doing so slowly it begins to surge.
mods
big turbo
1700 cc injectors
intake
spec stage 4 clutch.


no o2 in down pipe for turbo
and i forced OL focus idle.hpl