Need Tuning Recommendations
Thread Starter
TECH Junkie
iTrader: (28)
Joined: Nov 2004
Posts: 3,706
Likes: 0
From: Houston, Texas
Need Tuning Recommendations I plan on getting a custom tune on the Tahoe in my sig, I will hopefully have the muffler on by tomorrow. It is my daily driver, and I want it to have torque low down and have good part throttle acceleration. But I will sacrifice power for daily drivablility. I am planning on getting wait4me to do the tune. My ideas after reading many threads in this section are:
100% engine TM removed
80% trans TM removed above 30% throttle
20% firmer shifts part throttle (<30% throt)
93 tune
tune for intake, muffler
remove governor
raise shift points and redline
full tune at WOT (if that is possible)
focus on part throttle power
tune for max fuel economy when cruising (again, if possible)
any specific tunes for 4wd, if traction becomes a problem
I have a powertrain warranty, so if the trans drops out the bottom, it isn't a huge deal, but reliability is still a concern... and yes, I know that a tune will technically void my warranty, but they would have to figure that out first.
Also, is it possible to have stock shifts below 30% throttle, and firm shifts above that? Any suggestions or opinions about my ideas would be greatly appreciated. 
Thanks.
100% engine TM removed
80% trans TM removed above 30% throttle
20% firmer shifts part throttle (<30% throt)
93 tune
tune for intake, muffler
remove governor
raise shift points and redline
full tune at WOT (if that is possible)
focus on part throttle power
tune for max fuel economy when cruising (again, if possible)
any specific tunes for 4wd, if traction becomes a problem
I have a powertrain warranty, so if the trans drops out the bottom, it isn't a huge deal, but reliability is still a concern... and yes, I know that a tune will technically void my warranty, but they would have to figure that out first.
Also, is it possible to have stock shifts below 30% throttle, and firm shifts above that? Any suggestions or opinions about my ideas would be greatly appreciated. Thanks. 
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
2 things
1. can you fix your signature... only 1 sig pic is allowed w/a max size of 500x150 pixels (you could piece together, but must be on 1 line) ... 2 large pics in the sig is way too much ...
2. Looks like you've done your homework
TM removal is definite... >30% not sure if that can be done... unless it's different in trucks, the trans TM removes timing based on calculated load... so what you'd want is under low load situations keep the stock pull down, but under high load (more torque) remove less timing
20% firmer shifts would be raising line pressure, you may enjoy a shift kit more than just raising line pressure, but then could run into powertrain warranty issues
Not sure if there are any 4wd specific tables... I think that's all controlled by the BCM or some sorta ABS control module and not the PCM... but I could be wrong
If you plan on removing any emissions components may wanna have those codes deleted now as well
1. can you fix your signature... only 1 sig pic is allowed w/a max size of 500x150 pixels (you could piece together, but must be on 1 line) ... 2 large pics in the sig is way too much ...
2. Looks like you've done your homework
100% engine TM removed
80% trans TM removed above 30% throttle
20% firmer shifts part throttle (<30% throt)
93 tune
tune for intake, muffler
remove governor
raise shift points and redline
full tune at WOT (if that is possible)
focus on part throttle power
tune for max fuel economy when cruising (again, if possible)
any specific tunes for 4wd, if traction becomes a problem
80% trans TM removed above 30% throttle
20% firmer shifts part throttle (<30% throt)
93 tune
tune for intake, muffler
remove governor
raise shift points and redline
full tune at WOT (if that is possible)
focus on part throttle power
tune for max fuel economy when cruising (again, if possible)
any specific tunes for 4wd, if traction becomes a problem
20% firmer shifts would be raising line pressure, you may enjoy a shift kit more than just raising line pressure, but then could run into powertrain warranty issues
Not sure if there are any 4wd specific tables... I think that's all controlled by the BCM or some sorta ABS control module and not the PCM... but I could be wrong
If you plan on removing any emissions components may wanna have those codes deleted now as well
Thread Starter
TECH Junkie
iTrader: (28)
Joined: Nov 2004
Posts: 3,706
Likes: 0
From: Houston, Texas
The more I have thought about it, I was thinking of keeping the tuning stock under low load so it drives like stock, and then under moderate to heavy loads, remove 80% of TM and have firmer shifts. I would do a shift kit, but I have to worry about the warranty and also, I don't want firm shifts all of the time. For now, I am just going to do intake and muffler, and maybe in a few months, nitrous.
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