i have 98 ls turbo t3 t4 walbro 255 fuel pump dsm 450cc injectors tuned on hondata s300 running straight down pipe im getting misfire when im on low throttle like when i go from dead stop and it misfires around 2k (well i think its misfire) car jerks around 2k only at low throttle and when car is warm, i work at 5am and it never does it but when i head home which is around 230 when hell raises it starts to misfire? tried changing my injectors to bkr7e hoping it would solve the problem but it still does it....... anybody got any ideas what it is or how it can me fixed?

 

hows the fuel filter?

 

changed that about 1 and a half months ago

 

hows the intake manifold? see if it needs a cleaning. how about maf sensor?

 

both look good