have a question

not you · #1 Sat, July 25th, 2009, 01:17 PM

Ok ok I will write in sentences, my wife yells at me too for that also . U will have to bare with me with spelling. You stated that if I run 89 octane on 87 tune (meaning the 87tow tune?)I can advance my timing myself on custom tunes. How hard is that to do step by step or harder and what kind of mpg do u get .One more thing my truck is a flex fuel truck but never use that e85 its not around here does that matter. thanks again Shawn

***Jackpine*** · #2 Sat, July 25th, 2009, 02:05 PM

Quote:

Originally Posted by not you

Ok ok I will write in sentences, my wife yells at me too for that also . U will have to bare with me with spelling. You stated that if I run 89 octane on 87 tune (meaning the 87tow tune?)I can advance my timing myself on custom tunes. How hard is that to do step by step or harder and what kind of mpg do u get .One more thing my truck is a flex fuel truck but never use that e85 its not around here does that matter. thanks again Shawn

That's better, I kind of get lost in a sentence that spans five lines and as many thoughts!

Both Level 1 and Level 2 are written for 87 octane. In the Custom Options menu, you simply scroll to "Timing" and then hit the "up arrow" until you see +1.0. That's really all there is to it. And yes, Level 2 is the "tow" tune.

The whole point of Custom Options is to allow YOU to make small adjustments in a tune. Nothing too major.

I can't give you a "final" figure for mpg, because our trucks are different. Bill's custom tunes easily improved the economy by 0.5 mpg over the canned tunes. The canned tunes probably gave me an improvement of at least 1 mpg, maybe 2 mpg over stock.

You don't have to run E85 at all. If you do, you'll probably see a big drop in gas mileage, but you may see an increase in power during heavy acceleration.
When you get custom tunes, tell Bill that you are not going to use E85.

All this will probably make more sense when you get your Gryphon. Be sure to read the manual!

- Jack

not you · #3 Sat, July 25th, 2009, 06:02 PM

Well you make it sound easy

. I was hoping for a better mpg from you than that but i will take what i can get. thanks alot for your help and patience with me. you are now my go to guy for info.you make it easy for me to understand. I cant wait to get it Im going to jersey in two weeks and want to see the mpg on the trip it gets about 15 to 17 at 75 80. butt this time Im keeping it at 70 and with the Grython I love 1 to 3 mpg gains but we will see thanks again it means alot Shawn

***Jackpine*** · #4 Sat, July 25th, 2009, 08:53 PM

Quote:

Originally Posted by not you

Well you make it sound easy

. I was hoping for a better mpg from you than that but i will take what i can get. thanks alot for your help and patience with me. you are now my go to guy for info.you make it easy for me to understand. I cant wait to get it Im going to jersey in two weeks and want to see the mpg on the trip it gets about 15 to 17 at 75 80. butt this time Im keeping it at 70 and with the Grython I love 1 to 3 mpg gains but we will see thanks again it means alot Shawn

It really is easy Shawn, but remember, you're not driving an economy car. That big V8 is having to drink a lot of gas just to fill the cylinders properly. And, you need that big V8 to move all that iron - these are not "light weight" trucks.

You're actually getting pretty good gas mileage already. I get about 15.5 at 70-75 with my 4x4 Screw, and it's carrying a 200#+ bed cap. I can get 16.5 mpg at around 65 mph.

There's no way though, that you're going to get more than about a 2mpg increase. The laws of physics are against you here.

- Jack

not you · #5 Sat, July 25th, 2009, 09:33 PM

Ok i guess thats one way to let me down easy.

i also drive a screw and also have a 200 pound cap (mines white thow) I read just about all these threads and alot bost 19 to 21 mpgs butt can i atleast spin some tires on a dry day or you going to hurt my feeilngs again

Shawn

***Jackpine*** · #6 Sat, July 25th, 2009, 10:10 PM

Quote:

Originally Posted by not you

Ok i guess thats one way to let me down easy.

i also drive a screw and also have a 200 pound cap (mines white thow) I read just about all these threads and alot bost 19 to 21 mpgs butt can i atleast spin some tires on a dry day or you going to hurt my feeilngs again

Shawn

I think you CAN spin the tires, but I've never tried - I'm an old man!

I know if I pass someone on a 2-lane highway at WOT I get a belt squeak in an upshift. That's pretty good in my book.

Some of the people getting "great" mileage are driving fairly light versions of this truck with much lower gear ratios. And, I'm not sure they all even know how to calculate gas mileage properly. The ONLY way to do it is to have an accurate odometer and divide miles driven by gallons inserted at fillup. If the odometer is wrong, due to incorrect tire size, the mpg figure will be a lie. If the mpg is taken from the estimate on the Gryphon, there are a number of factors that can make it inaccurate. Things like consistent headwinds, tailwinds, and temperature can make a huge difference. Even brands of gas seem to have an effect.

Hope I'm not being TOO disappointing!

- Jsck

not you · #7 Sat, July 25th, 2009, 10:21 PM

No not at all you are telling it like it is in your eyes and boy you throw all the factors in (head wind type of gas and so on )that way there is no confution and thats what i like straight foward no bs . thanks again i think you answered all my questions. So when i get the gryphon i will be informed if not look for my thread i will post and sit and wait for the answers thanks for all the help today Shawn