2019 Mustang GT w GT350 TB Auto : accel. after downshit and possibly lack of power

[Dontov]

Hi everybody,
somebody install intake and GT350 TB on his 2019 Mustang GT before think about tune the car,
i have try to tune for GT350 TB with advice on a post here (driver demand, predicted throttle angle, effective area),
and now, i see 2 issues :

1st, often, in full auto mode, when downshift (when mph is low enough to i imagine), the car accelerate (never drive or see the car before, and never tune or drive a coyote before)... does i make mistake ?

2nd, i made a 0 to 60 mph, and insteed #4.2s, i calc 5.9s (again, not able to do a 0 to 60 with stock parts and tune)

I add tune in attachement

Best regard for any help

[mstang_man]

Hi everybody,
somebody install intake and GT350 TB on his 2019 Mustang GT before think about tune the car,
i have try to tune for GT350 TB with advice on a post here (driver demand, predicted throttle angle, effective area),
and now, i see 2 issues :

1st, often, in full auto mode, when downshift (when mph is low enough to i imagine), the car accelerate (never drive or see the car before, and never tune or drive a coyote before)... does i make mistake ?

2nd, i made a 0 to 60 mph, and insteed #4.2s, i calc 5.9s (again, not able to do a 0 to 60 with stock parts and tune)

I add tune in attachement

Best regard for any help

took a quick look at your file, the throttle body is in correct for GT350 TB.

[veeefour]

First of all you can't make GT350 TB work properly with 3 gen PCM - you need TPS converter as position sensors in 3 gen are different.
You would want to grab a TPS converter or get a 2020+ Bullitt throttle body.

[Dontov]

First of all you can't make GT350 TB work properly with 3 gen PCM - you need TPS converter as position sensors in 3 gen are different.
You would want to grab a TPS converter or get a 2020+ Bullitt throttle body.

As you can see here, the kit installed (w/o calibration stuff, cause they ask me for help) don't speak about TPS convertion

[Dontov]

i tried to manage some number between some sheet as some as not indexed the same (i.e 500 / 750 / 1000 rpm and the other 400 / 600 / 800 / 1000...) so perhaps i made mistake...