Hi guys here I go again! Lol right I've finally got my s1 running on ofab after replacing my loom with a converted 2i loom. Engine now starts on the button and idles nice. Problem is that it idles without the iscv connected but when connected, revs start climbing then dropping back to idle, as soon as I apply the slightest amount of throttle the engine revs erratically before dropping back to idle. With the iscv unplugged the engines idles very nicely but will not revs properly, revs just die when throttle opened. Can rev it,just have to apply throttle slowly. I've also noticed that with map sensor vacuum unplugged the engine revs instantly so maybe an issue with the sensor? I've read about very similar problems to this on here but no conclusion???? Please help guys!!!! For such a simple setup ofab seems to be such a pain for alot of us, I should have stuck with the mfi lol.

 

Not doubting what ya bought but you sure your setup isn't a ofac instead of ofab as the manifold pressures are different and that will cause it to hunt, also have you replaced the vac pipes