Diablo 93,Canned tune,results,mileage

[seems fishy]

If 93 /94 octane gasoline wasn't so expensive($2.25 litre for 93,and 94 depending what day,it is in Canada),this would be good.However, it is expensive.I have been driving,my 2023 Ram,DS, like a Nun recently(no offense to any Nuns).
I did not expect if you drive on the hiway at 80kms, UNSPIRITED DRIVING(not 100,or 110kms.)with the 93tune,I only am using 11.6km. per/100kms.Just cruising,no stop and go traffic.That is 24.5mpg Imperial.Not towing anything,windows closed,and A/C ON,since it is the end of May.That is with MDS deleted.I think that is in the upper range of what to expect,AND,I don't recall it being that good with OEM tune,in the past 2 years.
I know I am paying 50 cents more a liter,
more than regular, but that still pretty good for a 5.7hemi,with MBRP Pro cat backs.Probably better than when it came from the factory,with MDS,not deleted. Just saying...
Now I know even if you had it supercharged( mine isn't,but I had an S2000 and Mustang prior that were),you could do the same,without gunning it.Actually the S2000,got great mileage,S/C'd,no matter what you did to the gas pedal,and the Mustang 16mpg,not so much(4.6, with lots of add ons) on a good day.
That said, Lets hope the price of gas stops rising.I prefer abit faster for normal driving,but it is good mileage.I will revert back to my old ways soon,because the hemi sounds so good.

 

[Wild one]

If 93 /94 octane gasoline wasn't so expensive($2.25 litre for 93,and 94 (depending what day,it is in Canada),this would be good.However, it is expensive.I have been driving,my 2023 Ram,DS, like a Nun recently(no offense to any Nuns).
I did not expect if you drive on the hiway at 80kms, UNSPIRITED DRIVING(not 100,or 110kms.)with the 93tune,I only am using 11.6km. per/100kms.Just cruising,no stop and go traffic.That is 24.5mpg Imperial.Not towing anything,windows closed,and A/C ON,since it is the end of May.That is with MDS deleted.I think that is in the upper range of what to expect,AND,I don't recall it being that good with OEM tune,in the past 2 years.
I know I am paying 50 cents more a liter,
more than regular, but that still pretty good for a 5.7hemi,with MBRP Pro cat backs.Probably better than when it came from the factory,with MDS,not deleted. Just saying...
Now I know even if you had it supercharged( mine isn't,but I had an S2000 and Mustang prior that were),you could do the same,without gunning it.Actually the S2000,got great mileage,S/C'd,no matter what you did to the gas pedal,and the Mustang 16mpg,not so much(4.6, with lots of add ons) on a good day.
That said, Lets hope the price of gas stops rising.I prefer abit faster for normal driving,but it is good mileage.I will revert back to my old ways soon,because the hemi sounds so good.

Everything i've ever owned always gets better milege in the 50 to 55 mph range,i call BS on these guys that claim the sweet spot is 70 mph,that's complete hogwash.
I could easily pull down 30+ mpg with the wifes 1320 Challenger and that's Dodges drag oriented 6.4. My 300 at 99 to 100 kmh gets over 30 mpg,at 104 kmh it gets 28 mpg,just 4 or 5 km's more speed makes a hell'va differance in mpg.

 

[04fxdwgi]

Mine too. I have the 20" tires at 39 psi and the 3.23 gears. Things got a lot better with a 91 tune and 93 gas. On a long 50-55 mph cruise (no stop and go), I can get 26+ mpg depending on how flat is is and how much wind. That is with A/C on and cruise on, too. Have seen 29 on a 25 mile flat stretch in Delaware.

Get between 16 and 18 around town.

Hit 70 mph and it falls off to 18 -20 mpg

Best mileage I ever got in any truck and it still can be a hoot to drive "with spirit".

 

[Wild one]

Mine too. I have the 20" tires at 39 psi and the 3.23 gears. Things got a lot better with a 91 tune and 93 gas. On a long 50-55 mph cruise (no stop and go), I can get 26+ mpg depending on how flat is is and how much wind. That is with A/C on and cruise on, too. Have seen 29 on a 25 mile flat stretch in Delaware.

Get between 16 and 18 around town.

Hit 70 mph and it falls off to 18 -20 mpg

Best mileage I ever got in any truck and it still can be a hoot to drive "with spirit".

LOL now that's funny as i run 39 to 40 psi cold in the majority of my tires in the summer.
On the vehicles i use in the winter, i'll drop them down to about 28 psi for a little better traction in the snow and ice.
They might ride a bit rougher but it helps milege,and i also think it's easier on front end parts over a 100,000 miles of wear and tear

 

[04fxdwgi]

LOL now that's funny as i run 39 to 40 psi cold in the majority of my tires in the summer.
On the vehicles i use in the winter, i'll drop them down to about 28 psi for a little better traction in the snow and ice.
They might ride a bit rougher but it helps milege,and i also think it's easier on front end parts over a 100,000 miles of wear and tear

After driving a plow truck and a wrecker for some 20 years, always found that skinny snow tires (750.16's) with max air gave the max traction in the snow for plowing, pulling and control.
90% of the vehicles we pulled out of ditches in the snow were fancy cars or 4x4's with big tires. They didn't take into consideration that the 4x4 doesn't do squat to help control or stopping once traction was lost.

 

[Wild one]

After driving a plow truck and a wrecker for some 20 years, always found that skinny snow tires (750.16's) with max air gave the max traction in the snow for plowing, pulling and control.
90% of the vehicles we pulled out of ditches in the snow were fancy cars or 4x4's with big tires. They didn't take into consideration that the 4x4 doesn't do squat to help control or stopping once traction was lost.

The worst winter drivers i've found up here are younger gals driving lifted 4X4's with wider then stock tires,they're always going way to fast for road conditions.
If i run across a vehicle in the ditch in the winter,the odds are very likely it's a female that's under 35.
You try to tell them that just because it'll take off from an icy intersection,it doesn't stop any better on ice,and if it's got a wide tire under it,it actually stops worse then most vehicles,but it's like talking to a brick wall
Todays generation of younger female drivers seems to be alot more aggressive driver then any other generation of female driver i've ever dealt with

 

[markabby]

so, the theory here is more air psi in the tires means less friction on the road, which means better gas milage?

 

[HemiLonestar]

so, the theory here is more air psi in the tires means less friction on the road, which better gas milage?

Less rolling resistance to get the mass moving but the trade off is too high a tire pressure will cause uneven treadwear (centers tend to wear out sooner depending on how high you go) just like too low a pressure will cause uneven wear.

 

[Wild one]

so, the theory here is more air psi in the tires means less friction on the road, which better gas milage?

Less rolling resistance always translates to needing less horsepower to maintain speed.
The more power an engine uses to maintain a speed,the more gas it's gonna burn.

edit: @HemiLonestar beat me to the punch

 

[markabby]

ok. i'll stay with the 36 psi. besides, when i get them rotated, they always check the pressure.

next question: are you guys saying higher octane gives better milage?

 

[Wild one]

ok. i'll stay with the 36 psi. besides, when i get them rotated, they always check the pressure.

next question: are you guys saying higher octane gives better milage?

Do a chalk or water test on your tires to find the ideal pressure.If you don't know what those tests are,google it,you'll find lots of video's on doing either test.
Depends ,some vehicles do better on 91 even if they're stock,you pretty well have to test it yourself to find out what your vehicles like,then make a judgement call on whether it's enough to offset the price differances

 

[HemiLonestar]

Less rolling resistance always translates to needing less horsepower to maintain speed.
The more power an engine uses to maintain a speed,the more gas it's gonna burn.

edit: @HemiLonestar beat me to the punch

Great minds

 

[04fxdwgi]

so, the theory here is more air psi in the tires means less friction on the road, which means better gas milage?

Yes. Trade off is too high pressure wears tires faster.

 

[MarshRam]

I've had Diablo tune running 93 in both my trucks for nearly a decade and I get 13.5-14.5, both are modified though. If I ran a full tank of gas in the sweet spot on the highway I might pull off 16mpg. Before tuning to 93 they didn't get much more than the 13.5-14.5. Maybe a .5 to 1pmg difference. Did the 93 only to compliment performance on the single cab and to run fuel with more detergent (supposedly better) on both. I'm finding it hard to comprehend ranges in the mid 20's for a 4th gen practically stock Ram with a 5.7. Never had a stock 4th gen, but did have a stock 3rd gen with the 4.7 and it never came close to those numbers.

 

[Wild one]

I've had Diablo tune running 93 in both my trucks for nearly a decade and I get 13.5-14.5, both are modified though. If I ran a full tank of gas in the sweet spot on the highway I might pull off 16mpg. Before tuning to 93 they didn't get much more than the 13.5-14.5. Maybe a .5 to 1pmg difference. Did the 93 only to compliment performance on the single cab and to run fuel with more detergent (supposedly better) on both. I'm finding it hard to comprehend ranges in the mid 20's for a 4th gen practically stock Ram with a 5.7. Never had a stock 4th gen, but did have a stock 3rd gen with the 4.7 and it never came close to those numbers.

My 4th Gen 4.7 never came close to matching what my 5.7's get.The motors to small to get decent milege in a full size pick-up.It doesn't create enough torque under 2,000 rpm to be efficient,the little motor pulls okay once it's above 3500 rpm,but under that it struggles a bit

 

[Marshall]

I had a v6 in a Dakota with a stick, and while it was OK, I do better with this current 1500 at 70mph, I have got 10/100km often, if road is flat and no head/side winds, which is uncommon here. And it is not -30.
I have 3.9 gears, 8sp stock everything.
I have not done a calculator check , The computer is good enough for me , BTW I just run the cheap crap gas these days, most times.

Gas milage, try 400 bush of wheat on a 1960's 3 ton truck with a 345 or 392 motor. 5 m/g was the norm at 50mph. Thank god I am not feeding those these days.

 

[turkeybird56]

Do a chalk or water test on your tires to find the ideal pressure.If you don't know what those tests are,google it,you'll find lots of video's on doing either test.
Depends ,some vehicles do better on 91 even if they're stock,you pretty well have to test it yourself to find out what your vehicles like,then make a judgement call on whether it's enough to offset the price differances

I run 93 when towing or really stupid hot staying above 100F for many days. Then I run 89 rest of the time as all my gas powered tools made to run on 89 also so just convenient.

 

[Wild one]

I had a v6 in a Dakota with a stick, and while it was OK, I do better with this current 1500 at 70mph, I have got 10/100km often, if road is flat and no head/side winds, which is uncommon here. And it is not -30.
I have 3.9 gears, 8sp stock everything.
I have not done a calculator check , The computer is good enough for me , BTW I just run the cheap crap gas these days, most times.

Gas milage, try 400 bush of wheat on a 1960's 3 ton truck with a 345 or 392 motor. 5 m/g was the norm at 50mph. Thank god I am not feeding those these days.

Let me guess you had International grain trucks

 

[Marshall]

good guess , the 392 was a 67 1600 CO with a allision auto & 2 sp rear end, from a school bus, was a good set up in the field with Her driving.
other a standard 68.

Then picked up a HD diesel 855 with a road range transmission got great milage ,500 bus. was nothing for it.

 

[Wild one]

good guess , the 392 was a 67 1600 CO with a allision auto & 2 sp rear end, from a school bus, was a good set up in the field with Her driving.
other a standard 68.

Then picked up a HD diesel 855 with a road range transmission got great milage ,500 bus. was nothing for it.

My Dad had a couple one with a 345 and one with a 392,the worst of it was the old Fargo with a 318 was better then either with 300 bushels in the box,in a soft field.That old 318 had more grunt then either of the CornBinders had when making the 1-2 shift