X15 questions

[Rawze]

(01-21-2021 )Camstyn Wrote:  ...


I guess my biggest question is since I get the same MPG’s at 565/2050 and 505/1850 with my performance series, would I see better numbers with an efficiency series at 500/1850, all else being equal?
...

Work performed is the result of fuel consumed.

YOUR RIGHT FOOT and how hard you push your equipment is what directly determines how much overall work your truck is doing and therefore its fuel consumption.

You seem to have this misnomer in your head that one engine is significantly better with power vs fuel used than another under the same exact amount of use .. and this is mostly not true. There are slight differences but they are not going to make any significant differences due to demands like your describing.

WHAT overall power and torque you apply on demand from your equipment to the work load determines the amount of fuel you used, plain and simple. ALL of those model engines are going to be very similar if you drove them using the the same exact acceleration rates and speeds, weights, etc. and use from them.

LEARN TO DRIVE BY A BOOST GAUGE AND TO SAVE FUEL FIRST AND FOREMOST and you will save money in fuel and maintenance above all else.

START by learning how to climb all the hills and such and never let the boost go above about 20 psi... FIND BETTER GEARS and keep RPM up instead of using high torque and everything will benefit form this far more than comparing the nuances of one slight engine variation or another against each other.

If I flashed my ECM with a "performance tune" and drove my truck as hard and with as much HP and torque as you claim that your demanding from yours... I would only ever get 6 mpg too!