X2 on the in gear idle. Got the carb tuned correctly and helped a bunch at idle and less hydrocarbons but the converter was too tight..took it to a more loose 2200 and made a world of difference. 3.23 gears and not too much of a dog off the line...3.55's would be better. Gas mileage sucks at 11 ish. Great torque for a teener and is much more streetable with the loose converter. 286 hp and 261 tq to the rear wheels.