misfire on light load and randomly on boost

[jazza]

car is v4 wrx sti

Mods zre fully forged, link g4, twisted turbo, aftermarket fuelling, fmic, cams.

Prob is that on very light throttle it misses and hesitates but once you put foot down its smooth again and then randomly pops and farts on boost in random gears. Ive changed the plugs, coil and ignitor. Still no change. Theres no cel or any codes on the g4. I dont know whether its a crappy tune thats causing it or something minor. I thought plugs were first obvious thing but no luck. Im not too sure where to look next, ive searched but noone seems to havea misfire on light throttle.

Any help would be mint

[Timmah]

Plug a laptop into the Link and see what it\'s doing would probably be the best thing to do.

[Guest]

Is it up to operating temp when its doing it? Who tuned etc?

[jazza]

Yup at normal operating temp and was tuned by kent at speedsource last year, hasnt done many kms since the tune. Ill try sus a laptop and data log, only have a tablet to use for now....laptop shat the bed sadly

[Guest]

Kent? Hard man to get hold of. Happy with the tune from him what was the result?

[jazza]

Was 300wkw so pretty happy with power but i think it was a rushed tune, previous owner had it done not me. Too end was good but down low was rough.

I really noticed the mis one day after driving in the rain, so i thought it was the coil as it was close to the scoop but have since changed it. Tryna make sure all the earths are earthed right to as i heard a dodgy earth could cause some issues

[Guest]

Pic of the bay for kicks?

[jazza]

None on my tablet,, will upload some in next little while. If i cant fix miss iol get gcp to sus it and retune but earliest he can do that is next week. Back to the running shoes for a week i think haha