Missfire. need help asap

[K9]

Sup. i'm getting codes like random missfire and 2 codes that say cylinder 1 & 4, this only happens sometimes when pushing true gears to redline. runnng stage 1+ with v-power.
what should i check first?

[dronners]

coilpacks and sparkplugs first port of call id say

[fab5freddy]

As above, plugs, i've replaced two in the last 2 weeks

[K9]

coilpacks and sparkplugs first port of call id say

will check tomorrow 

[shoaybmakda]

coilpacks and sparkplugs first port of call id say

This.

If these are fine then could be your injectors as I eventually found out. But definitely start at that point first.

[Johal87]

I just had this, mine was injector 3, did plugs first, but because it was the injector it messed that plug up again so had to do the plugs again anyway

[ROH ECHT]

I always have new coils in the garage because they will cause misfires when they begin failing rather than reaching complete failure. If I swap one out and the problem is fixed...it was the coil. If not I check the plugs and replace if nearing the time when I usually replace them...and by checking I mean I gauge them and replace if their gap has increased. If the gap is larger...you have burned through their coating and pointless to re-gap. If still exists...the injectors, but haven't had to go that far yet being at 127k miles total with just 67k miles on the S3 injectors that were installed with my K04 upgrade.

[K9]

whats hould the gap be between NGK plugs? they were now 0.80