MPG Booster Tune

[bacardizzi]

What grade of gas is best for the MPG Boost tune? I'm about to take a long trip and want to get the best MPG I can.

[mikel]

on an SRT8 it is for premium fuel only.

[bacardizzi]

Ok cool. Thanks Mike!! So I can run the MPG Tune and still run the 93?

[BlackZ71Silverado]

The MPG booster tune for your car will be fine with the 93 octane. Like the post above says, 93 only.

[RTJim]

on an SRT8 it is for premium fuel only.

But the description in the InTune when you select that tune says 87-up octane. That description needs to be changed if it requires premium (92?) just like the factory tune for an SRT8.

How about for a 2009 R/T 5.7? The factory recommends mid-grade (89) for their stock tune. I believe the 5.7 trucks might only need 87 (but somebody needs to verify).

[comp50]

on an SRT8 it is for premium fuel only.

But the description in the InTune when you select that tune says 87-up octane. That description needs to be changed if it requires premium (92?) just like the factory tune for an SRT8.

How about for a 2009 R/T 5.7? The factory recommends mid-grade (89) for their stock tune. I believe the 5.7 trucks might only need 87 (but somebody needs to verify).

We need 89 octane also in stock tune

[06MonteSS]

the mpg booster tune is an 87 octane tune... and is not a performance tune... not like the regular 87 octane tune...

[mrglock]

Ok this topic has confused my little brain. I have a 2006 5.7 Ram with the MPG tune. If I remember I had to put 89 octane with the stock tune. Now with this new tune do I continue with 89 or can I use 87 now?

[mikel]

you can use 87 now.

[mrglock]

Thanks for the quick reply. This makes the tuner pay for itself with the money I will save even if I only get 1 mpg increase. That's a 12 cent saving a gallon for 87 octane and with a 26 gallon tank I will recoup my investment quickly.