Hi everyone i am really need your help or experience on this and i have one mysterious issue with my car over month.

and here is my problem, recently i have tuned my car with following mods:

TD06 18g blouch turbo
Deatschwerks 650cc injector
APEXI power FC with controller
Walbro 255 lph fuel pump
FMIC
APEXI AVC-R
one step colder spark plugs

and problem is, it makes poppin (missfires) sound inside the cold air intake while giving full throttle in between 0-3k rpm and rpm increases with bit hesitation more like i am running with 3 cylinders. on upper rpm range its ok actually it flyies. actually i have tried on my APEXI power fc controller like, putting different injector lagtimes, however i have noticed that injector lag around 0.50ms the throttle response getting better but still.

so my question is:

what injector lagtime should i put regarding with Deatschwerks 650cc injector and also should i check anything related to this issue, thank you

 

have you checked your coil packs?

 

Sounds like coil packs to me! Or check the gap on ya plugs!

 

what AFR?

Simon