Sponsored

18+ GT Performance Tune Pac

RoGCobraRV

Well-Known Member
Joined
Mar 28, 2021
Threads
13
Messages
126
Reaction score
92
Location
Jacksonville, FL
Vehicle(s)
2020 Mustang GT
Thans man! He sent me a pm but at least I know how now.
 

geep81

Well-Known Member
Joined
Sep 29, 2018
Threads
57
Messages
1,389
Reaction score
1,413
Location
Cleveland OH
Vehicle(s)
2020 GT Premium
The gt350 and bullitt owner's manual say about 30k. I have about 10k miles on mine and it's looking dirty but the car doesn't notice. I'll probably take it off and pound out the bugs then run it for another year.
Thanks! And very nice car you got. 👍
 

Sponsored

UTAR15

Member
Joined
Aug 27, 2021
Threads
1
Messages
12
Reaction score
4
Location
Las Vegas, NV
First Name
Ryan
Vehicle(s)
2020 Mustang GT Prem

asc709

Well-Known Member
Joined
Jun 17, 2021
Threads
3
Messages
48
Reaction score
57
Location
El Paso, TX
First Name
Robert
Vehicle(s)
2020 Mustang GT Premium PP
Still giving out group codes? I want this!
 

wa9njm

Active Member
Joined
Jul 7, 2020
Threads
4
Messages
37
Reaction score
41
Location
Upstate SC
First Name
Nick
Vehicle(s)
2019 Mustang Bullitt
If codes are still available I'd like one too. Thanks.
 

Sponsored

NeedForGreen

Well-Known Member
Joined
Aug 8, 2019
Threads
33
Messages
758
Reaction score
519
Location
FL
Vehicle(s)
2019 Mustang GT
Does anyone know what air/fuel ratio this tune should be running at? I think I may have an issue with the throttle body sensor or something else like an O2 sensor. Cars not tossing any codes. I usually see 14:1 at idle and 12:5 ish on wot. Now I'm seeing nothing change on wot. Doesn't drop. But then I'll see it go to 13:9 and as high as 15:1 when cruising. That definitely concerns me.
 

EFI

Well-Known Member
Joined
May 19, 2015
Threads
65
Messages
5,287
Reaction score
4,732
Location
Masshole central
Vehicle(s)
5.Br0
Does anyone know what air/fuel ratio this tune should be running at? I think I may have an issue with the throttle body sensor or something else like an O2 sensor. Cars not tossing any codes. I usually see 14:1 at idle and 12:5 ish on wot. Now I'm seeing nothing change on wot. Doesn't drop. But then I'll see it go to 13:9 and as high as 15:1 when cruising. That definitely concerns me.
Fueling is not changed with the tune over stock, they both run the same exact lambda. The formula is stoich (14.08) * lambda, so at full throttle you should be in the mid to high 11s AFR.

Have you logged it throughout a WOT run to see that it doesn't go into power enrich? It takes a bit of time to get into it, it's not instant and it's only at full throttle eg. 90%. If you're not quite at full throttle, it won't go into power enrich and you'll see near stoich values.

Also during cruise it will fluctuate more, 15.1 is nothing to be concerned about. But if you're WOT at high rpm and it doesn't get into the 12s or less then you have some issues. Although at that point you would throw lean codes and/or other sensor codes like MAF or WB etc.

1642389254836.png
Sponsored

 
 








Top