New to the forum

[602]

I have a 21 with 43 k on it , no problems, supposed to go in on the July 12 for the high pressure fuel pump replacement , i have gotten 30.1 mpg hand calculated , hope the recall doesn't effect it , i hope i can be an asset to the forum

 

[creagin]

Once they flash your ECM with the updates required for the fuel pump, you can expect your fuel economy to drop to 20-21mpg.

 

[BoostN]

Welcome to the forum!

 

[John Jensen]

Once they flash your ECM with the updates required for the fuel pump, you can expect your fuel economy to drop to 20-21mpg

Wrong! The Z46 recall, Ecodiesel HPFP replacement does not include a flash.

 

[John Jensen]

I have a 21 with 43 k on it , no problems, supposed to go in on the July 12 for the high pressure fuel pump replacement , i have gotten 30.1 mpg hand calculated , hope the recall doesn't effect it , i hope i can be an asset to the forum

The HPFP replacement will not affect your mileage

 

[JD9560]

I have a 2021 Laramie fuel pump was replaced in February at 29000 miles mpg has gone up a little if anything. But still averaging under 30 unless it’s a trip with long highway miles

 

[Fuelie]

Once they flash your ECM with the updates required for the fuel pump, you can expect your fuel economy to drop to 20-21mpg.

No flash required. I have a 23 Limited and my fuel mileage stayed the same.
Tom

 

[StanRam2]

The HPFP replacement will not affect your mileage

Hey John. I had mine in to the dealer for the egr cooler recall. They flashed mine and fuel economy went for a crap and it was a dog. I bought the Green Diesel Engineering tune which is EPA compliant and that restored the power and economy.

 

[John Jensen]

Hey John. I had mine in to the dealer for the egr cooler recall. They flashed mine and fuel economy went for a crap and it was a dog. I bought the Green Diesel Engineering tune which is EPA compliant and that restored the power and economy.

Good, that's a great tune

 

[JD9560]

Is the warranty still valid with the Green Diesel tune

 

[StanRam2]

Is the warranty still valid with the Green Diesel tune

 

[StanRam2]

Hi John. How it works.... when your truck goes into a Ram dealer, you use the scan tool they send you to reinstall the factory tune. After you get the truck back, reinstall the GDE tune. They never know it was in their. They walked me through the procedure and easy peasy.