Car going down the road under no boost will sometimes out of nowhere start running lean. car has a safc neo and all bolt ons with 4 720cc, and walbro 255 then after running lean will go back to normal as if nothing hapened please help. Most of the time does it while idling for a extended period.

 

Whats up! I'm the guy with the grey T-II you met this sat at the BBQ? I'm not sure what your problem is. Does it go lean when the secondaries come on (3500-3800) when reving, or at cruising speed (5th gear). Might invest in some dyno time, to plot where the lean spot is.

 

nice meeting you too man....nah the problem could be many things. gonna call ari and see if he knows.