I have stock intake/exhaust and 35" tires. Original 3.73 gears as well....

On level 3 with 93 octane, how far can I go with timing and WOT fuel and stay "safe"? I'm not looking to win any drag races, so I plan on leaving shift points, etc as-is for level 3, but would like every bit of torque and HP possible for off-roading and towing....

 

1.5 on the timing not sure on fuel. NO towing on level 3. I would up shift firmness to at least 6.

 

Why no towing on level 3? Why does more power not equal better towing? .. (or at least no worse?)

Pardon my ignorance... I'm new to all this.... The last time I tuned anything it had a Rochester Quadrajet and 4 on the floor...

Thanks!

 

Personaly I dont know why you cant tow with a level 3 tune but it states it right in the manual.

 

Long story short - perf tunes tend to be on the lean side compared to tow tunes (relative), hence the demands of towing may cause elevated EGT's - so no towing. You can, however haul up to rated load in the bed.

Towing is NOT equal to hauling.

Ignore the Edge CYA at your peril. This is the same situation for custom SCT tunes as well. In additon to shifting changes and other appropriate changes to support towing.

 

This is from Troyer on towing tune:



A towing tune is designed for use when towing - so the engine is tuned somewhat differently as is appropriate for running heavy loads out back - it runs a bit richer to keep things cooler and thus will not make quite as much peak Hp or torque - though it is still of course more than our 87 octane tuning.

Use the tunes as is described in our documentation - and a towing tune is made to be used when towing.

There is no advantage to using a towing tune when not towing - the only exception to that would be if someone has to tow frequently, then it does not make sense to continually reflash the PCM several times a week. So in a case like *that* you would be better off to just leave it on the towing tune all the time - but that is really the only exception.

Otherwise, run your performance tunes when not towing, and run your towing tune when towing.

Have fun,

 

You beat me to it. Thanks.

 

All makes sense. thanks!

I don't tow very much, so I'll leave it on 3 and switch to 2 when I do tow.

Do the custom settings (i.e. tire size, gear ratio, etc) carry over when switching from one level to another, or do I have to punch them in manually every time i make a level change?

 

Nothing changes over, you need to input info again. There is a setting that remembers your last settings but I never trusted it.

 

It only remembers the settings if you hit that button and you stay in that level. If changing levels, you always start over.

 

Gotcha, I never used it.

 

What about on level 2? Been driving this away around town for a few days not towing anything, and I like the shiftpoints and low-end torque at lower speeds with this tune...

Level 3 seems much better at higher highway speeds, but I think 2 is better in the 0-50 mph daily driver world.

How far can I go with timing, etc.. on 93 octane and will this add any more power to this tune? I don't want to mess with the transmission because I like it the way it is... just wish it has a bit more b*lls.... What other settings besides timing should I mess with?

Thanks!

 

Level 2 is designed to run on 87. That is what I run and it works great. I guess you can run 93 but you would need to bump the timing +3 and I just don't see any benefit to that. If you dont want to change shift pressure, just adjust for your gears and tires and leave all else as they programed it and run 87.

 

I know what you mean about level 2 is better for daily driving, I thought the same thing when I had an edge. It would be great if the low end of level 2 could be combined with the top end of level 3, that would make the ultimate edge tune. Talk to Bill at power hungry performance, he might be able to make that happen ( he was on the development team that designed the edge)


As for timing adjustments on the Edge, the general rule of thumb is +1 degree of timing for every 2 point increase in octane (or -1 degree for 2 points less). Level 1 was written to run on 87 octane, level 2 on 87, level 3 on 91. So if you have 93 octane, you can safely add +1 degree on level 3 and +3 on level 2. You may be able to add more timing, every truck is different, but most everyone agrees that you are safe using the one for two rule.

 

Yep - I believe this is possible in the custom Edge tuning Bill has alluded to a few times.

If you want to preserve your investment in the unit, this is worth looking into.

Bill - time to wake up!