Well I was out in the wet when the car felt like it was misfiring when on boost in 6th. Did it twice and never did it for the rest of the 20miles.
It's the first time it has done it and wondered if the weather is playing part?

Car is a 2003 sti, 2.5" sports cat system, CAI, 3 port solenoid, fuel pump and grade 7 ngk's. Mapped to suit the mods.

The plugs I gapped at 0.8mm I think, I used the setting off the sticker under the bonnet so whatever that says.
I have read about a slightly smaller gap once it's mapped with more boost, do I need to reduce the gap on mine or is the standard gap ok?

 

Any ideas people?