With the current mods in my sig--minus the FASS and the DD clutch(this coming weekend)-- i estimate that i am at about the peak of my mileage gains before i start going back down relative to HP increase. When i go to Cali in July and to recon school shortly thereafter, i will have alot saved up and i will be looking at a Phat Shaft71 Flux 3's and dual stocker CP3 sometime. right now with the Bully Dog on tow, i get 23.5ish highway driving the speedlimit, and on crazy larry runnin with traffic, about 18.5ish, all hand calculated. How will my mileage change with going to bigger sticks and the duals? Also howabout the daily driveability and towing?
SEMPER

 

***bump***

 

the flux 3's shouldn't hurt your mileage too bad, the second cp3 won't affect mileage at all. The bigger turbo will likely eat up some fuel. Overall, you might be 1.5-2 mpg less than your best now. The cam might bring back some lost mileage.

 

Milage not to bad I wouldnt think but your gona be laggy

 

You will smoke and get some heat. If you are running that 71 as a single and trying to tow with flux 3's... you had better plan on water injection in your future!

 

NO NO NO the 71 is going under my 62

 

I got 23.8Hand calced on my way back from KY at 65mph with smarty #7 With the stuff in my sig

 

SWEET assurance!

 

I think mine dropped a little. I havnt hand calc. it yet but the overhead has went from reading in the 20's to 17. I need to do some driving and add do my gazintas.

 

My overhead reads as high as 22-23...but I have never gotten better than 15-17 and more often 13-15. But...I can help putting the powe rto the ground way to often. I see a 2 mph min gain if I drive the speed limit. I have a big heavy truck compared to most.