bought one of the above for my (ahem) corsa turbo to replace an fse, which gave me no end of problems. the webber one sorted the miss-fire out instantly. but adjusting it seems to be quite difficult. with the 4mil allen key in the top, ive turned it not nearly 1 whole turn. on the wideband lambda gauge in the car it shows that it is going leaner, the way i want it to as previously it was reading in the 10's on the gauge. now about 11. every now and again it flicks into the 9's though say in 6th gear on full throttle.

just wondering if this could be the regulator or maybe the dizzy cap or rotar arm isnt giving enough spark?????? car is running around 1.8 bar of boost and it holds it at 1.6

many thanks in advance