tune review

[suncoaststage5]

i am pretty new to efi live and have just built my first tune for my 08 lmm. truck is a crew cab ltz with just a full exhaust. I started with a 40hp tune a well known tuner put out as a learning tool and modified it from there. so if you have the time and don't mind please look it over and give me some input on anything you see wrong or that could use modification I adjusted the high altitude and medium altitude files as I am sitting around 6500 ft above sea level and haven't seen a da under4500 ever. also what pids would you recommend to data log? rail pressure, pulse width etc... truck seems to run pretty good but would feel much more comfortable with input from others thank you for any help in advance 16537

[suncoaststage5]

bump anybody?

[blklmm]

What exactly did you change other than the altitude tables?

[suncoaststage5]

16541 sorry the tune I first loaded is what I started with and this is after changing a few things


Engine Operation.Injection Amount.Torque Reference
{B1161} Pedal Position Mode A to Desired Torque, modified.
{B1160} Pedal Position Mode A 4WDLo to Desired Torque, modified.
{B1163} Pedal Position Mode B to Desired Torque, modified.
{B1162} Pedal Position Mode B 4WDLo to Desired Torque, modified.
{B1169} Torque Based Fuel, High Alt, modified.

Engine Operation.Injection Amount.Main Injection
{B0720} Main Injection Pulse, modified.

Engine Operation.Injection Timing.Main Injection Base
{B0920} Timing Base, (A), High Altitude, modified.
{B0921} Timing Base, (A), Med Altitude, modified.
{B0922} Timing Base, (A), Low Altitude, modified.

Engine Operation.Fuel Pressure
{B1050} Fuel Pressure Base, High Altitude, modified.

Engine Operation.Boost Control
{B2204} Desired Boost Levels, EGR Off, High Altitude, modified.
{B2207} Desired Boost Levels, EGR On, High Altitude, modified.

I guess I should have modified fuel pressure base med altitude as well
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[dbflyrod]

Can you post the original tune so we can see the differences?

[Rapponotti]

do you have the def and egr removed on this tune?

[Bajakguy2]

Bump curious as well, if you had the Original tune?? or is this the one?





i am pretty new to efi live and have just built my first tune for my 08 lmm. truck is a crew cab ltz with just a full exhaust. I started with a 40hp tune a well known tuner put out as a learning tool and modified it from there. so if you have the time and don't mind please look it over and give me some input on anything you see wrong or that could use modification I adjusted the high altitude and medium altitude files as I am sitting around 6500 ft above sea level and haven't seen a da under4500 ever. also what pids would you recommend to data log? rail pressure, pulse width etc... truck seems to run pretty good but would feel much more comfortable with input from others thank you for any help in advance 16537

[SASDakota]

I usually like to log Turbo vanes, boost, rail desired/actual, main qty, main pulse, main timing, pilot qty, pilot pulse, pilot timing, ECT, IAT, RPMs, Throttle, Baro. The nice part about logging on the LMM vs say a Dodge. GM gives you a selection of channels that you can fill with data points. Dodge has pre-selected groups and the items you may want are often in other groupings. And as you can guess, more groups = slower data samples on Dodge.



Would you be game for trying a tune I made? All my LMM tuning has been at low elevations, I'd love to try something in your area. Post your email if you are interested.

[Bajakguy2]

Hey buddy. Send me the file Tstevens@unlimited-technologies.com

[blades11b]

very interested in seeing some tunes also. ill upload a quick one i made that i saw a nice MPG increase out of and what felt like a little more HP.

[asmithIII]

timing base(A) tables are seldom used in an LMM engine. modify the (B) tables.
in edit, you know how to change and use the (A) timing tables

[Dmax-Chris]

Does anyone have some helpful tips?? Pm me if you don't want to advertise any secrets. I use the josh h timing calculator, but how do you know if you are within safe limits of timing??