Bullitt tuning issue vortech

[Rockford]

Hoping maybe someone has an idea what could be going on. My installer is having difficulty tuning my 2019 Bullitt. Basically they are having overfueling by almost 60%. They cant get correct AFR at idle. If they pull the maf tables by 60% it cleans up somewhat. It's a beefcake stage 2 V3 kit. It include the gt350 throttle body adapter plate and intake tube, ID1050x injectors, bap, and standard 3.6 pulley. They are in the process of swapping injector to rule out faulty injectors.
Mechanical timing, vacuum leak, and bap have been double checked. Next is getting a different tuning file.

My question is can the gt350 throttle body or gt350 intake manifold in the bullitt be causing tuning issues? The shop does many centri coyote jobs. They have never had this issue before.
Thanks.

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[andrewtac]

Could be the throttle body, was told on the gt350 intake to use the stock tb (2020 car), with Lund.

 

[cbrtrx]

The gt350 t.b. or manifold should not cause any fueling issues.

 

[Jackson1320]

Isn’t the 87mm t.b stock on the bullet. Sounds like maf data or injector data. You can dial in both. Should not be a problem

 

[Mustang_Lou]

Maybe the tuner isn't aware of the TB differences on the Bullitt??

 

[Jackson1320]

Maybe the tuner isn't aware of the TB differences on the Bullitt??

This is true. If your data is for a gt TB it would be a problem

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