How to get 20mpg+ on 37’s/ECU basics 5/5 up @ 60-70mph with V6 3.6L

[KurtP]

Finished up normal route. 4.88 gears; lifted truck; 400lb cargo; moderate winds.

Displayed ended at 19.7mpg; hand calc was 20.6. Still within my usual 5% deviation.

It works, folks.

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[RavensEyeOffroad]

Finished up normal route. 4.88 gears; lifted truck; 400lb cargo; moderate winds.

Displayed ended at 19.7mpg; hand calc was 20.3. Still within my usual 5% deviation.

It works, folks.

What all exactly did you do/change?

 

[KurtP]

What all exactly did you do/change?

Added 4.88 gears, a 3” lift, and a 400lb load. My last run under similar conditions was about 20.5-21 but with no lift no load and no gears. So it means the 4.88’s effectively carried cargo and the drag of a lift with sub 1mpg penalty from stock height/gears/no load.

Thats a win

 

[RavensEyeOffroad]

Geez. I feel like I am doing something wrong with mine lol

 

[KurtP]

Geez. I feel like I am doing something wrong with mine lol

All the data is in the vids my man. Take your two index fingers, hook them through my rear belt loops, and follow me through life. I got you.

 

[KurtP]

Just looked at my receipt. 20.3 was my swag head math. Hand calc was actually 20.6.

 

[RavensEyeOffroad]

Do you feel engine break-in is a thing? I think I've got less than 1k miles on my truck. I've logged all my fuel though.

 

[KurtP]

Do you feel engine break-in is a thing? I think I've got less than 1k miles on my truck.

A little. Break in made an impact on mine.

Its the tuning. The stock ecu file is too lean to run our overdrive efficiently.

 

[RavensEyeOffroad]

A little. Break in made an impact on mine.

Its the tuning. The stock ecu file is too lean to run our overdrive efficiently.

I'll admit I'm a bit worried about trying to retune a whole lot. I just don't want to get into the weeds with something as I have horrendous luck with things, especially like that. It would have to be 100% fool proof and plug and play with little to no "tuning input" from me.
In other words, daily driver don't have time for it to be down because I need it towed to the dealer etc. Lol

 

[KurtP]

I'll admit I'm a bit worried about trying to retune a whole lot. I just don't want to get into the weeds with something as I have horrendous luck with things, especially like that. It would have to be 100% fool proof and plug and play with little to no "tuning input" from me.
In other words, daily driver don't have time for it to be down because I need it towed to the dealer etc. Lol

I daily mine.

I dont do tuning anymore either. If it doesnt plug in and make the car drive more gooder-er, i aint messing with it anymore.

 

[RavensEyeOffroad]

I daily mine.

I dont do tuning anymore either. If it doesnt plug in and make the car drive more gooder-er, i aint messing with it anymore.

Yes!
I am interested in intake exhaust but I'm not in a big hurry really.

 

[KurtP]

Yes!
I am interested in intake exhaust but I'm not in a big hurry really.

Tuning makes the bigger of the improvements; but nothing is wasted.

 

[RavensEyeOffroad]

Tuning makes the bigger of the improvements; but nothing is wasted.

Gotcha

 

[HarryM]

I have talked to a couple of shops on installing the 4.88. One shop uses Yukon with Superchips and the other uses Spidertrak and Taser. Is there a quality difference between the brands. Thanks

 

[just_another_guy]

Has anyone been towing with a pulsar? I'm curious what effect it has on driveability and mpg under those conditions

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