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Tenner 07-04-2011 02:48 PM

Best Tune for Me?
I just bought a DS Predator. All I have done with it so far is set my tire size and installed the 87octane performance trans tune. I have access all the way up to the 93 octane.

My question is what would be the best tune for my situation. I use my truck as a daily driver both in town and on the freeway. I would like to get the best possible milage. I also will pull a boat, and enclosed snowmachine trailers with it. What would be the best tune for this.

I have a 2006 Dodge 5.7 Hemi. 4x4 My tires are Toyo MT 33x12.50R20. I have a flowmaster exhaust on it and a drop in K&N filter I also have a leveling kit installed.

Yesterday I drove about 300 miles and got 16.6 mpg (according to the overhead gauge. I have not figured it manually yet.) I was driving about 76-77. I was not pulling anything.

Any advice would be apprecitated. Thanks

916Timmy 07-04-2011 02:51 PM

Depends on how much you want to spend on gas really! The 87 perf tune is pretty good!

erm 07-04-2011 02:53 PM


My '07 Ram gets the best mileage on the 91 canned tune. I tried 2 tankfuls of 87 (truck hated it and I hated the truck :D), 3 tankfuls of 89 (ran better but not that great...MPG dipped a bit) and since then 92 octane. From the 89 tune I've seen a 4+ mpg improvement on the highway and I don't cruise slowly, normally running around 72 - 74 MPH.

So, for me, the 91 tune worked best but your mileage may vary.

I'd test a bit with different tunes and octanes under similar conditions and do your mileage calculation by hand.

The MPG counter in the truck is a system that measures MPG in real time and will vary depending on speed, load, ambient temp, etc....I've seen mine change with almost every mile when I reset it, drive around town, then hit the freeway. It took almost 60 miles of hwy driving for it to reach the best MPG reading.

chefred112 07-04-2011 04:11 PM

91 tune as well...

Tenner 07-04-2011 04:46 PM

Thanks for the quick responses. After this tank of fuel I am planning on going to the 91 perf. So what is a canned tune? The only options I had under the 87 perf was modify stock trans or performance trans. Is there other options i am missing?

erm 07-04-2011 05:00 PM

A "canned tune" is what DS includes as standard tunes in their tools, i.e., 87 tune, 89 tune, 91 tune...

So you select the tune you want to use, then modify after you load it.

Tenner 07-04-2011 05:36 PM

Ok I see...Its the tunes that are already in the unit when I bought it. Makes sense. Thanks.
What does WOT mean?

916Timmy 07-04-2011 05:40 PM

Wide open throttle.....foot to the floor

Tenner 07-04-2011 05:57 PM

Ok thanks that is what I thought.

andyournameis 07-06-2011 12:52 AM

Can you run 87 gas with a 91 tune?

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