due to recent thrashings at the track, i've been tinkering around with adjustments to make the engine idle smoother, and perform at optimum on boost, but i've recently found that there is something fishy about the idle screw/TPS.
When i adjust the screw (clockwise) it brings the idle down, and when it gets to near 900/1000rpm, the screw is maxed out and i can't turn it anymore - my question is, does this effect the throttle in any way?
I've adjusted the TPS all the way anticlockwise to accomodate this, but even so, it is still not enough to leave me some le-way.
Could these problems be the cause of my unusual turbo lag/high RPM response from turbo?