Hey guys. Im having a difficult time figuring something out. I have an ek hatch with a b16a2. Completely stock block and head, Ebay 57mm turbo. 10 lbs of boost. 5 year build runs strong and pulls hard. My issue is, there's a misfire or a fuel problem. Im running hondata v3 with the greddy turbo base tune. Randomly the wideband runs 10 flat and she sputters. I get on it, and it goes away. Stock map, 330 cc inj turned up to 440cc. TPS is fine. Ect is fine. Plugs and wires are fairly new. I've been datalogging and it just doesn't make sense. By buddy who knows more than I do says it's not the tune. But idk what it could be at this point.

 

Time for a recalibration of the tune... I doubt that this is a mechanical issue. But you won't know until you retune to narrow down the possibilities