Chris5.0coyote
Active Member
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My car has 33k miles cobra jet manifold stainless works Catless longtubes borla catback I was on 91 pump gas tune was fine for about 7kmiles but now I went e85 and datalogged for Lund tuning and tuner said the datalogs looks great I’ve drove the car to the track mabie did 7 passes was fine next day drove a hour did some roll racing and was fine turned back around to go home normal driving cruise control 80mph home and p300 p302 p304 came up I parked the car at home changed the plugs and 4 had the white porcelain cracked cleared the codes filled e85 again and drove it another 1k miles and did a couple runs was fine took it out the following Weeknd and drove it and the same codes came back up again !! Sent a email to my tuner he said go back to flex fuel tune and pump different gas it might not like the e85 I’m pumping so I’m Gona try that and I’m also Gona go back to 91gas on the flex fuel just throwing me off idk what to do any ideas ?
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