Hey fellas, i was just wondering for those of you with the tbi conversion on your 2f, how many of you have the tan/black wire hooked up. It's the one that controls timing functions. I would love to keep it hooked up because when it is i have much more power, throttle response, and better mpgs... but when it is connected engine does not idle. So what gives?? Do i HAVE to have an aftermarket dizzy? This is a stock 2f with the stock modified toyota dizzy and the 4.3 chevy tbi. Any advice is appreciated.