took the p car out this afternoon (misfire)
 

ok thinking it was a simple misfire as the turbo kicked in i felt a slight pause then a sudden hook up ( a matter of seconds) about ten min later i hit a full 2nd and third gear , at third i felt another misfire and then it was gone . no codes idle was perfect and can runs fine at low rpms , years ago my maf caused a few probs but i replaced it and its been fine , i did just switch from 100 oct to 91 and changed my program to pump gas , no smoke .. any ideas

How old are your plugs? New plugs and coils fixed my misfires.

^+1 only misfires i have ever had ( not counting any boost leaks which aren't misfires ) were caused by a cracked coil.

coils and plugs. especially if the car is tuned etc.

You may need to change your spark plugs, coils, reflash your ECU, or have you changed your exhaust system as of late?

thanks guys but plugs have very few miles on them maybe 6 k at most ... still thinking it may be my maf or clogged injection . the pacts wher changed only a few mile ago maybe 3 k . last weekend was the 1st time the car has been out and it was great all weekend this was a real surprise sat afternoon ... will trt to get a feel for it when the rain clears . oh sane eurp pipe for years so of there

took the p car out this afternoon (misfire)
 

Bad O2 or TB out of calibration possibly?

Try an e gas reset. Easy to do and you can start there.

am running giac this happen 150 miles after i changed mode to pump gas am still running on pump mode will change to 100 oct mondat . guess my question is will this reset my giac progran or bring it back to stock thanks again

took the car out for a test drive on 91 pump gas mode on my giac program , tried the e gas up date and all worked well lots of power for 91 oct , surprised me !!!! put in on my reader and no codes no misfires .. maybe the maf is ok if not ez fix