MPG

[Davidljones88]

Hwy MPG today was 33.
2.0 LDK Z54 TURBO.
Opel injectors.

What's everyone else averaging?

 

[Desert Sasqwatch]

Is that actual miles divided by actual gallons or is it based on the dash readout? Have you adjusted the fuel tank size with HPT to true-out the MPG function? Corrected the fuel tank float so it reads full at 9.5 gallons and empty at less than 1 gallon?

33 is really good, you must have had an egg under the accelerator pedal!

 

[Sluggonaut]

Have you adjusted the fuel tank size with HPT to true-out the MPG function?

Can HPT do that? If so, does anyone know where I make that adjustment?

I use Torque Pro and its MPG gauge is pretty accurate. I compared it to several of my manual calculations using miles driven divided by how much gas it takes at fill up.

 

[Davidljones88]

Is that actual miles divided by actual gallons or is it based on the dash readout? Have you adjusted the fuel tank size with HPT to true-out the MPG function? Corrected the fuel tank float so it reads full at 9.5 gallons and empty at less than 1 gallon?

33 is really good, you must have had an egg under the accelerator pedal!

I filled up, drove 50 miles exactly, filled up again (1.5 gallons) and divided 50/1.5. My car isn't accurately reading the fuel level which prompted me to test the mpg today.

 

[Davidljones88]

I also bought a Haltech Ic-7. I'm still learning how it all works. I hooked up the gps sensor and antenna, but I'm still not getting the speedometer to change. The gps is directly into the dash, not the ECU. PIN 33 is dedicated for this.

As far as auto averaging gas mileage, I'm not sure if the Haltech can do that.

 

[Cnixon160]

Depending on your model year and OS the system<fuel<tank volume, system volume, cluster density, cluster output there's a few different names and layouts the majority of them are not adjustable in HP tuners

 

[BSinvestments]

I drove a 96-mile round trip last summer when I tested my MPG, back roads mostly and about 30 highway miles cruising in the 80s. I averaged ~16mpgs, LSJ_T with a Z54, 80cc injectors, and E85.