rebuilt ls turbo. everything is stock. internals injectors everything till i break it in. stock regulator. speedfactory map sensor which i do have tuned in. im running s300. battery in trunk. intercooler piping hooked up with bov off. not building any boost yet. and a walbro 255. aem wide band. i didnt touch thge fuel map or anything. and like ill be driving and they always bounce reall bad from like 13 to 15 even leaner even richer. when i pull out on really light throttle/engine load afrs get like 10s or low. it has goof fuel pressure i dont get it? it misfires with 10 afrs i dont understand and its really hard to find another thread like this. cool it be as dumb as a oxygen sensor

 

or should i just throw my rc440s and tune it? but why would it be doin it now on a stock map

 

IDK about Hondata but sometimes that can be due to stupid $hit like having your wideband input inverted accidentally or haivng your closed loop target AFR way off.

Going rich on very light throttle is something you just need to tune out.

 

makes no sense because its all stock i dont even have the wideband wired to the ecu. im gonna put my 440s in and part throttle tune it today. ill let you know how it goes, future reference for someone else

 

speedfactory map sensor... it must be broke cause it read 7 psi and no way did i build even 2 psi. put a stock one in it and tuned it...perfect

 

the o2 voltage always cycles they change all the time thats what the tuning is all about