with the stock spring in a 180 pump, with decent control of the smoke down low, my afc is at full travel around 28-30psi, which makes sense, as the turbo is coming up, it really starts to come alive after about 10psi is when the arm starts to move out of the way, 45psi may be alittle to high for full travel, play around with the starwheel, the idea is to tune the afc to where the turbo lights the best, the smaller turbo you have, the quicker you can let the arm move out of the way. what i did is tighten the afc spring all the way (and the housing is full forward), and drove it around, it seemed alot better, and i started to loosen it about 10-15 clicks at a time untill it felt like the turbo was not spooing as quick, this is about where it was dumping too much fuel down low, and putting the fire out. also back your coarse smoke adjustment screw out untill it just touches the arm the the diapham is attached to, that moves the afc level inside the housing, after flipping and grinding down the front washer with the lip on it, it allowed an extra 2-3mm of rearward travel, without hindering front travel at all, this will help you control the smoke down low even more if needed. hope this helps you.
wes
