Any ideas ... Misfire Cyl 1 and 3

[chris97boxster]

I'm staying away from mohawk/husky 94
ethanol has its cons
when I was in montana
a lot of places were advertising premium without ethanol

I only fill up @ shell now
odd time @ esso

I'm running iridium no issues with plugs
going back to CU copper core would b a step backwards IMO

I ran a tank of 94 from husky & it t threw O2 codes
that's when I changed plugs

I like jake d 's idea if u have coil/wire problem
but I would do plugs 1st

Chris