here ya go, i probably should have put this on both threads..
It's at the wheels knelson, its 377/700 at the wheels, so add 20% to that and youll get your flywheel output
Black = 100hp
Green =60hp
Blue = tow
Red = stock
the tow put out more then i expected, but i decided not to lower it, the 60 hp gains about 10hp peak and a ton more hp down lower and about 45 ft lbs more then the tow....then you can see the 100..that one is self explanatory
Hey I ran one tank on the tow tune and one on the 60hp tune. Logged 668 miles Mpg were down on both compared to the old tunes. Average mpg was 11.1 used to be 12.5 at 70mph. Can you fix this?
Have not tried 100hp tune yet that will be on my next long trip without the trailer. I did notice on the 60hp tune going up hills the truck stays in gear longer but when the rpm drops down to 1500 to 1600rpm the boost goes to 0psi and the truck bucks. Did not like that. Runs great other than that. Can anything be done about that?
Ed
Ed@X&M Hot Rods
Mt. Pleasant, Mi 48858
Mobile Dynojet 248c
(989)430-9597
XMHOTRODS.COM [email protected]
VXCF7H3 got tune installed and hit the road this week--i pull 12000 cargo hauler weekly--and boy am i glad to get this predator back going--mileage seemed to drop about .5 to 1 mpg--shifts seem a bit firm --but pulling i would rather have it this way than a soft slipping shift--i did notice that trans held gear longer as rpms dropped---which is great--all in all boys so far this tune seems to be working great--thx for the hard work
xmhotrod and texhome, both of you either post your original backup on here, or send them to my email, id like to send you guys some custom tunes. I have an idea as to why mpg is a little down.
OK here's the deal guys I believe i know exactly what i did to cause this since its showing pretty much the exact same change across all cals. I have the fuel ramp up to peak fuel % across the entire pedal position range. This gives a nice transition between peak power and part throttle power. However since i jacked up the fuel here, its obviously causing a slight decrease in mileage over stock. I assume the timing changes i made are offsetting the fact that there is some extra fuel in the cruising range (hence the only .5-1.5mpg lose). I can ditch these changes, you'll still get that peake power in the cal id, but you'll probably lose that smooth transition. But regardless id like to test my theory so anyone who wants the tunes, email me a copy of your original backup and ill shoot you a 60 and tow with the changes made and we'll see what happens. I sent it to one gentleman and he said he seemed alittle sluggish in the mid cruise range but he said he preferred it.
Well, if I ever need a custom tune I'll let you know. I know alot of guys need mpg because they drive their trucks daily but I have a Hyundai Accent that gets me 35 MPG as my daily driver and I just drive my truck on the weekends. As a matter of fact I think my last truck-fill up was in April.
One thing I don't understand is everyone wants more power and better mpg. To me I think its a trade off. It takes more fuel to make more power so I'm happy to use a bit more fuel for alot more power. My truck 400 hp (aprox.) 15 mpg, my Accent 106 hp, 35 mpg. Trade off.
I got your new up date for the VXCF7H3. When i installed it into the truck my truck would not start after. I talk with one of your techs on the phone and managed to force transfer the original tune back into the truck but the truck still did not start. I took it back into for and they told me i blew the pcm mod. should i worry about trying to install the program again when i get my truck back. it is a 2005 f350 daily driver as a welding rig. the programer made a big diffirence when it was working and i rather not be with out it i just cant lose it to the shop for a week one more time. what should i do
Don, thank you for all of your hard work in getting this to us. I have only used the 100hp tune very nice throttle response. I put 400mi on the truck and I am averaging 17.6 mpg so far. I will use the tow tune over the weekend towing the boat 7500lb and let you know how that goes.
Thanks again
2006 CC 4x4 long box Airlockers 35x12.5 STT's, ARP headbolts,4" turbo Back S&B intake.
ltopilko wrote:I got your new up date for the VXCF7H3. When i installed it into the truck my truck would not start after. I talk with one of your techs on the phone and managed to force transfer the original tune back into the truck but the truck still did not start. I took it back into for and they told me i blew the pcm mod. should i worry about trying to install the program again when i get my truck back. it is a 2005 f350 daily driver as a welding rig. the programer made a big diffirence when it was working and i rather not be with out it i just cant lose it to the shop for a week one more time. what should i do
No i wouldn't be weary of it, sounds like a coincidence. Do it do anything wierd during the flashing process? Like no status bar? Did you make sure you did the key on key off thing? The ecm might have just been on its last leg and didn't like getting flashed with something new.
