after installing the 7" supercharger crank pulley and "tweeking" the idle and adj tps sensor....i now have a check engine light that pops on and off during idle and very low throttle (not in gear)....i am thinking that i may have the idle set too low because it is bearly at 650 - 750 rpm's and is somewaht choppy....vacuum at 16"hg at idle.....i havent had the time to readjust....but can it be that now that i have the 7" crank pulley....and no bypass valve that there is too much air being forced in the engine at idle creating an extremely lean condition??/ the air/fuel gauge reads very low/red at idle as well....when i give it gas...the light goes out.....but when the check engine light comes on....the idle raises to about 800rpm and is very smooth.....what about drilling a hole in the tb butterfly plate...............im confused