Tuning for fuel economy

[TeacherCreature]

There are tons of writeups on tuning for POWER and speed

What if you have a duramax truck or something and you want to tune for fuel economy? anyone have a writeup on that

[vortec]

Sell it and buy a prius

[Montecarlodrag]

There are tons of writeups on tuning for POWER and speed

What if you have a duramax truck or something and you want to tune for fuel economy? anyone have a writeup on that

It can be done, but all vehicles come calibrated for fuel economy/reliability from the factory, so don't expect high improvements in mileage.

[Bandit gs]

Dial your fuel trims in using a WB, adjust lockup and unlock speeds, increase your cruise timing. I still get over 30mpg with my GS that has 3.69s, 3k stall, cam, intercooler, MPS with a 2.6 pulley, etc.

[6.0_VHO]

What is the rule of thumb for lock/unlock adjusting for mpg?

[macca_779]

It can be done, but all vehicles come calibrated for fuel economy/reliability from the factory, so don't expect high improvements in mileage.

You have to be kidding. There are plenty of gains in fuel economy to be had if you lean on them.

[Montecarlodrag]

You have to be kidding. There are plenty of gains in fuel economy to be had if you lean on them.

I said "it can be done"

What I mean, you shouldn't expect to gain lots of MPG.

[macca_779]

I said "it can be done"

What I mean, you shouldn't expect to gain lots of MPG.

Ok so improving by 2L/100km average even with a cam you wouldn't call lots..

[stinky_1]

I was planning on buying one of these systems for that very purpose. I have tuned lots of imports and have gained as much as an extra 100 km per tank with tuning. Unless there is something wildly different with domestic cars and trucks, I am expecting to see similar effects.

I dont know anything about tuning a diesel though, but hope to learn that too. If you beat me to it, let us know how it goes. Otherwise Ill be working on it in a couple weeks

[07MontRedcp]

When I first got my 07' vette the factory tune gave me 25.3 MPG. After installing all the stuff shown in my signature and having EC-Tune do the tuning
my MPG went to 30. I thought that was a pretty big deal.

BJK