to those who have a BB tune
- Thread starter tybardy
- Start date
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Torque management is used to limit the amount of torque the engine is putting out to try and reduce the possibility of hurting the drivetrain. This of course causes reduced performance. Reducing this gives you some protection, and increased performance. Removing it altogether will give you the best performance increase, but will also increase the risk to your drivetrain. Tell Justin what you want and he will give you something reasonable.
withac
Full Access Member
Read this for the warranty issue.
http://www.tahoeforum.com/showthread.php?t=3312
If it's a worry, pay the core charge and keep your old PCM, then when you take it into the shop just swap the tuned one out first then swap it back when you get the truck back.
This brings me back to the Tow/Haul button... is it possible to allow a "resonable" ammount of TM under normal driving and then when i press the T/H button it removes ALL the TM?
withac
Full Access Member
my understanding is Justin can set it up about any way you want including what you describe but obviously he would need to answer that one, or at least someone else who has had theirs set up that way.
Nickleahy23
Full Access Member
All he can do witht he tow/haul is adjust the tranny tables, which include the TM..no engine features can be changed...its basically so you can drive 80% tm removed all the time, then hit that button and have 100% removed for when you want it, firmer shifts and such
JKmotorsports
tahoeyukonforum.com
From my research, TM works by retarding the timing during "abusive" actions such as WOT from a stop, WOT during shifts, etc. Timing is retarded to decrease torque output, more likely GM's way to help longevity of the drivetrain.
boostaholic
Full Access Member
www.performancetrucks.net
....read lots and lots of tuning threads, there is some confusion over torque management, abuse modes, etc. Isn't really complicated once you get into the jist of it, but confusing as hell starting out.
....read lots and lots of tuning threads, there is some confusion over torque management, abuse modes, etc. Isn't really complicated once you get into the jist of it, but confusing as hell starting out.
FATHERFORD
New Member
So my question is, is there a large difference between 93 and 87 tune?
I personally would do 93 if it was my vehicle, but it's my fiancee's 2nd car(she is the primary driver) and unless for a fact the gas mileage will increase at least a full MPG, i doubt she would be happy paying the extra $6-7 a tank for fill up just for $hits and giggles.
I personally would like to have the regular tune for daily driving/towing, then hit the tow haul button for 100% TM removed and even firmer shifts.
I already ordered coated long tubes, have a factory electric fan setup, and a slp intake installed. I hope this tune completes the package and gives that little extra oomph these hoes need, and a little better mpg to boot.
Still can't decide if I want to do a mild head/cam swap though.
I personally would do 93 if it was my vehicle, but it's my fiancee's 2nd car(she is the primary driver) and unless for a fact the gas mileage will increase at least a full MPG, i doubt she would be happy paying the extra $6-7 a tank for fill up just for $hits and giggles.
I personally would like to have the regular tune for daily driving/towing, then hit the tow haul button for 100% TM removed and even firmer shifts.
I already ordered coated long tubes, have a factory electric fan setup, and a slp intake installed. I hope this tune completes the package and gives that little extra oomph these hoes need, and a little better mpg to boot.
Still can't decide if I want to do a mild head/cam swap though.
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Yuke2K
Full Access Member
According to my recent correspondence with justin via e-mail, a typical 87 octane tune will net 10-15 horsepower at the wheels. A high octane (91-93) tune will get you an additional 10-15 over the 87 tune, along with another .5-1 mpg. This is assuming I've read everything correctly...does 30hp at the wheels from a tune seem like a little bit of an overzealous number to anyone else? Regardless, it all depends on the individual vehicle and modifications.
Once my tax return comes in, I'm thinking that I'll definitely be doing this.
Once my tax return comes in, I'm thinking that I'll definitely be doing this.
JKmotorsports
tahoeyukonforum.com
Just had my tune done today. Had all TM removed and shifts firmed way up. Holy $*^t:eek2: Night and day difference. I layed into it and got the truck sideways out of a gas station on the drive back home. Even a steady cruise down the highway was completely different. Slightly hilly terrain used to slow the truck down on inclines and I had to give it a lot more gas to keep a steady pace. Now it effortlessly keeps a steady pace going uphill without hardly anymore input from the accelerator. The truck lunges forward during shifts at WOT. Now I'm kicking myself in the butt for not doing this a long time ago.
JKmotorsports
tahoeyukonforum.com
When are you expecting to get it done?
Nickleahy23
Full Access Member
what else do you have done to the tahoe? I cant even get mine to do a burnout let alone spin the tires..and thats with the 93 octane tune
Rollin Thunder
Full Access Member
I ordered the Jenna tune. Jenna told me its the most aggressive tune there is. I got this on Tow Haul. Its a little untame for everyday. So for regular every day I just had the shifts changed. Even in regular mode its INCREDIBLY different. I got 93 all the way around. 85% removed in stock form and 100% removed with the jenna tune activated. The truck is 1000000000% more drivable and smoother. I cant wait to have the yukon done. As My silverado only had 285. It blows the yukon away at 320 hp. I cant wait to see what it does to the yukon. Im getting the exact same tune for the yukon. I wanna know if Justin will tune Diesels or not.
BTW in Jenna mode. HOLD THE F*CK ON. It will BLOOOOOOOOOOOOOOW YOU AWAY. I can make this truck do sideways burn outs with no brake. I just floor it around a turn and keep the wheel turned in the other direction and can go miles down the road like that if I let it. Its incredible. :lol:
BTW in Jenna mode. HOLD THE F*CK ON. It will BLOOOOOOOOOOOOOOW YOU AWAY. I can make this truck do sideways burn outs with no brake. I just floor it around a turn and keep the wheel turned in the other direction and can go miles down the road like that if I let it. Its incredible. :lol:
JKmotorsports
tahoeyukonforum.com
Right now all I have is an S&B intake and a 10 series single-chamber Flowmaster. I also did away with the engine driven fan which helped some. What gears do you have? I'm running 3.73s in the rear.
Justin mentioned something about the intake setup I have working very well, being as there was hardly any pressure drop.
How heavy is your BTL and enclosure set-up in the rear?
Nickleahy23
Full Access Member
e-fans are on my list of upgrades..as well as an intake..
and the BTL is fairly heavy..80 lbs for the sub then the weight of 2 sheets of mdf lol..im sure its not helping me at all..i guess i can find out better when i put it back in the truck in a month or so...i have 3.73's as well
FATHERFORD
New Member
I should be up in a week or two I got inline on feb 3rd. I even offered to just buy a scan cable but he had none in stock and to be cost effective for shipping it would be additional $55 unless two other people wanted them(hint hint people buy some
)Pretty sure I'm going to go with the 87 octane tune. Sure the extra power would be nice, but After going through Katrina and ONLY 87 octane available, I would hate to have another vehicle that was 93 octane only. Unless I can get this EFI live and two tunes from Justin and just switch them out.
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