Stock Attak- Top speed

[Highmiler]

Re: Apex

Yea - and my duramax will get better mileage after 50,000 when it's broken in also (not). 60k on the duramax, mileage actually creeping down, none of the apex's I know of ever saw over 120mph on the dream meter. All I know is the MachZ's go by the apex on the top end like you dropped a plug. First hand experience running run after run after run supports my findings.

Think snow!

First off, should have bought a Cummins. I usually get between 18 and 20 MPG.. Make sure you are changing you fuel filter and use PSD.
But seriously I saw 127 on the old dreamer last year. This was after I installed the track protector and loosend my track up.

What's PSD stand for?

 

[JJWickenhauser]

Welt!

Hey Welt,

I am thinking about buying a 2007 Duramax. What set up is your buddy running, what year truck, and how many miles. I know a guy getting 33mpg highway with a 24v 99 cummins 1 ton manual. I know! Crazy but the math works!! I've done it myself. It's even a dualey! He has the Bullydog injectors, oversized tires and a Super Chip in performance mode and 6" exhaust. I know that it's possible, but I've not heard it with a chevy yet. Cummins are great, but the rest of the truck is the down fall. Let me know. Thanks!!

(sorry this is off the subject a little bit)