It doesn't even compare to the TM Delete Mod. Whatever chip/programmer you put on, as long as you still got the stock PCM, you will have to restore it back to factory settings and then re-install the programmer after a few thousand miles because the stock computer WILL compensate for the changes made and make it's own adjustments to try to bring it back to stock. It's the adaptive learning put into these modern cars made to compensate for normal engine wear and vacuum leaks due to decaying rubber. It even says so in the manual that came with my programmer. They suggest doing this every 2-3K miles for best results.

I've had my programmer for 50K miles now and they are right...if i change it often, I don't notice when I reset the programmer, If I wait 5K miles or more, it seems to "awaken" the performance when it's really just the fact that the truck gets tuned back towards stock slowly over time without noticing.

 

Oh no doubt ditching 100% of torque management is great - but I thought we were talking of programmers in relation to adjusting the speedometer for tire size.

BTW "Learn Mode" is software programming built into the PCM, as such better programming tuners can turn this off or modify this feature as well...

 

Yes we were sorry for the short deviant...and no one has answered my question about there being any gears larger than the 4.86 or whatever that was...I forgot the actual gear ratio cause it's on the other page.



Edit: 4.88 I was close.

 

4.88 is numerically the highest I've seen for an AAM axle and I've not seen anything over 4.56 for the AAM front (1/2 ton axles anyway). Although it's common to have gears up almost in the 6:1 range in some vehicles such as Jeep Wranglers...

 

I'm convinced...when i get around to doing it, 4.56's it will be.

 

by my estimation, both in study crunching numbers, and in practice- 4.56:1 is the best combo for these trucks.. understand, mine is a 5.9L V8 levering through a 46RFE trans..

if- if I ran a hemi, it would still be the best combo- due to weight and engine power band range, coupled with the far superior transmission found behind those hemi's..

If it was a perfect world, and we could choose whatever gear ratio we pleased, I'm thinking 4.3:1 would serve my purposes the absolute best.. if there is margin to err on such things, I'm thinking it's best to err on the lower side.. so- 4.56:1 it is.. For the Hemi and the trans behind it, and in that same perfect world, I'd think 4.56:1 is still the best selection..

I'll toss this out there just for grins: we're talking axle ratio.. we're using axle ratio to leverage overall gear ratio.. the tires play a significant role..

because the factory provides you with a truck that fits somewhat of your needs, it's up to you to identify precisely what you're needing, and if it's worth narrowing down to a precise use.. If you've identified what your goals are, you can place cross-hairs on an overall ratio by selecting a tire height that either reduces or raises your overall ratio based on the axle gears and transmission leverage.. there are a ton of tires to select from, and I wager if you tagged on the extra expense of tires when you do the gears, you could nail down the perfect overall ratio for you..

I have 4.56:1 front/rear.. I also run cepek FCII 35"x12.5"x20" tires (which are actually about 34.5" or so new, and mine are likely down to 34" with the loss of tread).. I'm dropping them and slapping on DuraGrappler 285/75/17's in the next two days.. that is a tire just shy of 34" by labeled measurement.. I've no clue yet what they actually measure.. it should put me dang close to where I wanna be.. we'll see..

 

Yea it would be awesome to have the in town help of the 4.56s with the highway of the 4.10s