about a year ago i did the lexus/550cc swap with a walbro fuel pump and never really had any problems a couple weeks ago i put on an upgraded ct 26 and just didnt feel comfortable driving it with out monitoring it so i got a wide band. to find out that it is running lean. i thought with what things i have done you werent supposed to need tuning but i could be wrong. anybody know which is the culprit to the running lean? anybody have any luck apexi safc neo?