weird air fuel problem i think

[jmorri15]

so my car will run great for awhile and then it will all of a sudden the af just drops and the car runs like crap, it seems like the cutout happens at like 3k. im at a loss. ill post a video when it happens again. i have no idea what even to look at.

 

[moi1463]

Have you done anything to you car lately? mine did the same after i put new FIC 650cc injectors in without re-tuning for them. Also it could be your Maf, could take a look at that too.

 

[hondaslayer1]

How do u know ## a/f are off.what mods have u done lately.it wouldn't just do that for no good reason.

 

[jmorri15]

well long story with this car. the guy i bought it off of had put in a ton of mods. hks vpc, hks gcc, hks evc, greddy 18g, 550 injectors. but had never taken the time to really set it up right or put in a fuel pump thats able to handle the load the 18g could require. so the car would only boost to like 12lbs and then fuel cutout would happen. so after fixing all the small things on the car that needed to get done. harmonic balancer, new act2600, broken turbo bolts and other things i put in a 255lph pump in and hotwired it. so now the car runs great most of the time. however the problem that was small before because of everything else sucking on the car has become a bigger issue because everything else is good now. im learning on the fly i taught myself how to drop the transmission cause i snapped my clutch fork and didnt feel like paying $550 just to replace a $60 part. so i have no idea how to really figure out cause each problem is new to me. so heres what happens. it will be running great and then i will see the air/fuel drop from green to the red with nothing really changing in the car. normally i can run up to 20lbs without any problems however sometimes it will fight boost that high. any clues or where to start?

any ideas of even where to start would be awesome