09 tcm question

FarmDiesel22

Farmer
Sep 28, 2009
128
0
0
It's just a max effort tune for stock turbo. Yeah it's only when in 4 lo. It defuels bad on shifts and if you don't wait to get into the throttle until you get in 3rd gear it will defuel and you will bounce hard. I learned the hard way and launched my front end in the air about mid track
 

MMLMM

Tunergeek
Mar 2, 2008
4,086
2
38
43
Reno, NV
www.dyncal.com
It's just a max effort tune for stock turbo. Yeah it's only when in 4 lo. It defuels bad on shifts and if you don't wait to get into the throttle until you get in 3rd gear it will defuel and you will bounce hard. I learned the hard way and launched my front end in the air about mid track

I had this same issue...

does your pull go something like this...?

[YOUTUBE]GozYpGTkRg4[/YOUTUBE]


If so, Its not in the TCM....
 

FarmDiesel22

Farmer
Sep 28, 2009
128
0
0
Yeah. The second to third shift defuels bad and bounces. What is the problem then if it's not being able to tune the tcm??????
 

MMLMM

Tunergeek
Mar 2, 2008
4,086
2
38
43
Reno, NV
www.dyncal.com
Who does your tuning? They should be able to fix it easy.

I found out my issue in the ECM, and was able to get it right. I built that tune in that vid sitting at the sled pull while my truck was being loaded with sand bags and totally overlooked it. I got that gnarly defuel in 4lo. There are tables you change in 2wd, but there is an exact table that it uses instead, in 4lo, look thru your tune closely, you will see it. Make the 4lo table the same as your 2wd table....

EDIT: I just saw your sig. Talk to Nick, he knows how to fix this Im sure. He might have a different way depending on how your tune is setup..
 

turbojamie

Member
Dec 7, 2009
101
0
16
Ok today put dads truck TCM in my 10. His is an 08 with A40. Truck does not move with his tcm installed in my 2010 with a50.