New e85 setup and missing mid range

[KevinHoward8509]

Originally Posted by silversleeper

Could you edit your signature without the returns? It isn't visible. We can figure it out with a loooong sentence but not when it's invisible. E.g. Can't see if you have a DSX flex fuel sensor and e85 tune.


Without enough info I'd say you have a cracked plug and might be running lean if replacing the plug doesn't correct the air fuel.


No, e85 doesn't make it run worse if it's setup for it. I run e85 on boost.

no cracked plugs pulled them myself and regapped them down to .28

[KevinHoward8509]

Car was tuned on pump gas as well as E. made the first pull on 93 and made 615 wheel then drained the tank put in 10 gallons of E and ran it again and made 675 wheel.

[gm2376]

Originally Posted by KevinHoward8509

Car was tuned on pump gas as well as E. made the first pull on 93 and made 615 wheel then drained the tank put in 10 gallons of E and ran it again and made 675 wheel.

try the plugs....if you make it to metro Detroit area, look up DR Phil Hoefler for a tune..one of the best tuners in the Midwest and Katechs engine tuner....if he can't figure it out, few can.

[KevinHoward8509]

Found my issue. I did passenger side bank my buddy did drivers side. Took it out for a test spin and holy shit.

Gonna take it back and make another pull on E85 as it is right now it pulls harder on pump than it was yesterday on E85 wondering if that cylinder was completely dead or what but runs super super clean now.

[KevinHoward8509]

Installed tr6ix gapped them to .28 and runs like a freight train now. Pulls much harder right now on pump gas than it did yesterday on E85

[silversleeper]

Originally Posted by silversleeper

Without enough info I'd say you have a cracked plug and might be running lean if replacing the plug doesn't correct the air fuel.


No, e85 doesn't make it run worse if it's setup for it. I run e85 on boost.

Do I win a prize? I want a cookie
Edit: Joking aside thanks for posting a followup and pic. It helps the community.

[Athletics101]

Originally Posted by silversleeper

Do I win a prize? I want a cookie
Edit: Joking aside thanks for posting a followup and pic. It helps the community.

Yeah totally, there is always questions and when an OP finds the solution we never know.

[Badbubba]

Hard to believe it ran fine before the addition of E85, then all of a sudden the plug cracked during the install. Was any work done around that cylinder? Or could it gave been cracked upon removal. Looks clean like it just happened. Nice that the new plugs and gap resolved the issue. Any idea of the ethanol content of the E85? Could then figure the stoichiometric value and then the afr. Was run 2 on the dyno sheet 93? If so, appears to be somewhat on the lean side. But would need to read the plugs to be certain. For run 1, if it was ethanol, the percentage would need to be known to calculate. The removed plugs appear to be BR7EF, by NGK. 2 steps colder than stock. Some may state they are "safer" than the TR..

[KevinHoward8509]

I honestly think it had a plug issue before the work was done in all honesty. she would chop a little funny from time to time at idle then clean itself up and another CRAZY thing that is now fixed is i like to run with my fog lights on and whenever i would have them on my radio signal went to hell and could not pull any stations so i had to keep them off all the time. now with the new plug i can run with the fog lights on all day and have no issues.

red pull was E85 and Blue pull was pump gas. not sure what the Ethanol content was during the pull they drained the tank and put in 10 gallons of E so im assuming was very high.

[KevinHoward8509]

Originally Posted by Athletics101

Yeah totally, there is always questions and when an OP finds the solution we never know.

i would give you a prize if i could haha. need a factory zl1 pump that had 4000 miles on it haha.

They pulled the plugs on install of the E85 to Gap them then reinstalled them. must have cracked slightly then then me and my buddy pulled them again to gap them from .32 down to .28 and he installed drivers side and i did passenger side and still had the miss.

I then replaced all 8 myself last night as as soon so i pulled the plug from the socket the ceramic shattered and fell apart.

[Greenhornet2]

I don't want to rain on your parade or anything but if you seriously think you had a spark problem going on while it was being tuned you probably should go have it tuned again. Tuning on a misfire could have terrible results, unless your wideband they were tuning on was on the good bank.
Just a thought. Glad you found the issue though.

[KevinHoward8509]

Originally Posted by Greenhornet2

I don't want to rain on your parade or anything but if you seriously think you had a spark problem going on while it was being tuned you probably should go have it tuned again. Tuning on a misfire could have terrible results, unless your wideband they were tuning on was on the good bank.
Just a thought. Glad you found the issue though.

goes back in on Thursday to double check the tune. run's amazing now. just want to double check and see where the numbers are laying. my A/F gauge is reading in good shape still want to check it out for peace of mind. hes not charging me

[Greenhornet2]

Originally Posted by KevinHoward8509

goes back in on Thursday to double check the tune. run's amazing now. just want to double check and see where the numbers are laying. my A/F gauge is reading in good shape still want to check it out for peace of mind. hes not charging me

Ok good deal. I'd take it easy until you double check though.

[KevinHoward8509]

Originally Posted by Greenhornet2

Ok good deal. I'd take it easy until you double check though.

easier said than done haha. tuner is confident there is no issues running it as is and it feels to be running flawless and is difficult to stay out of it when you just get your baby back but its only 2 days i wont beat on her to bad haha.