Issue with tune on my 2015 Ecoboost Mustang

solow5.0 · Post by **solow5.0** » Sat Jun 13, 2015 6:26 am

just bought the Trinity tuner for my 2015 Ecoboost Mustang. I updated the tuner and installed the 91 octane tune in my car. I have always/only run 91 octane in it. under partial throttle/tip in, it has developed a hesitation/surge.... The only mods I have are an Airraid CAI and deleted the mufflers. Could the mods be causing the issue? Any help would be appreciated.....

heath t · Post by **heath t** » Sat Jun 13, 2015 11:41 pm

Im having the exact same issue on my 2015 F150. Im running the Premium tune though.

solow5.0 · Post by **solow5.0** » Sun Jun 14, 2015 2:08 am

I refilled my tank and added a bottle of 104+ to it then switched to the premium tune for 91-93 octane. still having the same issue. will try the stock tune tomorrow and see if it helps...... really surprised there is no response on my thread from the company

Post by **sohfast94** » Mon Jun 15, 2015 9:08 am

We're open M-F 9-6...

Some times it takes bit for the post to show up on the forum.

Please post your last tune written and I will adjust it. There's already an update being made for the mustang ecoboost it just hasn't been built yet.

For reference: http://www.diablosport.com/forum/viewto ... 44&t=50990

solow5.0 · Post by **solow5.0** » Mon Jun 15, 2015 4:39 pm

Thank you for responding...

Not sure how to post the tune, it was the most recent one you guys posted in the downloads tab on the main page...

Post by **mikel** » Mon Jun 15, 2015 5:10 pm

use dsdownloader to export the backup and last tune written and post the files here please.

solow5.0 · Post by **solow5.0** » Tue Jun 16, 2015 4:13 pm

BACKUP...?

Post by **mikel** » Tue Jun 16, 2015 4:16 pm

cool, last tune written as well please?

solow5.0 · Post by **solow5.0** » Tue Jun 16, 2015 4:21 pm

PREMIUM FUEL PERFORMANCE TUNE

Post by **sohfast94** » Tue Jun 16, 2015 4:46 pm

Actually. Return your car to stock and hit update tool and load this.

Will fix everything and no custom tune required.

solow5.0 · Post by **solow5.0** » Tue Jun 16, 2015 6:16 pm

Will give it a shot. Thanks...

solow5.0 · Post by **solow5.0** » Wed Jun 17, 2015 2:29 pm

it won't load the update onto the tuner. keeps saying it has encountered a problem and needs to close..

solow5.0 · Post by **solow5.0** » Wed Jun 17, 2015 2:55 pm

looks like it finally downloaded. connected to car and chose custom tune instead of diablo tune...is that correct?

Post by **mikel** » Wed Jun 17, 2015 4:06 pm

No, if you loaded the update, just use the Diablo tune.

solow5.0 · Post by **solow5.0** » Thu Jun 18, 2015 5:37 am

Ok.. I have tried both the custom tune and the diablo tune after updating the trinity. The custom tune seems to have cured part of the issue, but not all. Loaded in the diablo tune and it is worse. Air fuel ratio is pegging at 20 and vacuum stays around 23 on decel/downshifting with paddles... very pronounced stumble still at tip in/partial throttle... runs ok at higher rpm, but light throttle not so much... any info?

Issue with tune on my 2015 Ecoboost Mustang

Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang

Re: Issue with tune on my 2015 Ecoboost Mustang