Gryphon vs X3

[SinCityFX4]

Well..like the others...Nice ride man.

Next...On my Livewire I run the 87 perf tune from Justin as well and I get around 14 mixed on a good day. I can get pretty good if all highway...what MPG's are you getting? The economy tunes are crap..you will get the best MPG increase with your perf tunes..the shift strategies are crud on the MPG tunes and quite sluggish in comparison to their perf brothers.


I have not yet received my tunes from Bill so I cannot give you info that way.

[Jackpine]

Those big, wide tires are great for off-road in the mud or sand, but they add a huge amount of rolling resistance on the highway. The combination of the lift and the wide feet adds quite a bit of wind resistance too. The bigger gear ratio, while giving you back some, if not all of the power you lost with the bigger tires and wheels means your engine operates at a higher RPM for a given speed, which translates to more gas used.

However, your truck looks great and I bet it's fun to drive.

I'm sure Bill can write tunes that will improve things, but realistically, I'd expect something in the neighborhood of no more than a 1 MPG increase with your setup.

I wonder if your exhaust is helping or hurting you? There was a thread in this forum a while back where Cody, I think, talked about how exhaust mods don't always give you what you hope for. (But I bet it sounds nice).

- Jack

[zeruin]

yea.. I figured as much.. obviously the lift and tires aren't helping me much, but they do look cool..

I assumed having the gear swap would have improved the rpm range for lower speeds, I guess it only contraindicates itself with making my truck faster off the line..

I'm pretty sure most exhaust setups don't give too much in mpg gains to begin with.. mainly you get the sound and slight performance boost.. any gains in economy are quickly droned out by the awesome sound..

I never planned on getting the best fuel economy.. I guess I can settle for what I get.. besides, I always have an 06 Honda Civic sitting in the driveway if the pocketbook ever gets too tight..

-btw- the exhaust tips were painted black with some Krylon BBQ or High Temp spray from the local Wal-Mart.. They've been holding up pretty well since March '08, I haven't had to touch it up yet.. worst case scenario, you get a chip and then ya spray a little more..

[kokopellimotorsports]

That is one beautiful truck. As Jack stated earlier I wouldn't expect to see any increase to possibly 1 MPG increase.

Ty

[johnnyd]

Hey Z, your driving situation sound identical to mine. When I first got my custom tunes from Bill I was running my summer wheels, which are 33's, and I saw now difference in my mpg. Now that I've put my stockers back on for winter I'm doing a little better. With the factory wheels and tire size back on, this truck is a real blast to drive and it's gonna' be hard to go back to the 33 x 20's

Honestly though, with a rig like yours who cares about mpg