fuel saving upgrades v10
And did I understand you to say that only "a little" of your current MPGs came from the mods?
What am I missing!?!?
It does but not much. The extra rolling resistance probably negates any gains.
No coil packs. Coil On Plugs for the modulars.
Crappy ones will certianly reduce MPG. Change 'em out at around 60-80K. Verify torque every 30K.
You're right, most exhausts can help with highway MPG.
However, the gains are minimal.Programmers are not designed to increase MPG. The are designed to increase specific power throughout the RPM range by advancing the timing (typically). Real power increases need higher (more $$) 91+ octane fuel. No savings.
If you do this stuff you could probably see the same increase in MPG as you would if you added 10lbs of pressure to each tire. However, your lightened wallet would probably give you the most MPG increase due to the reduced sprung weight.

Want to increase highway efficiency? Reduce friction and pumping losses the best you can and increase your tire pressure. Realize that there are trade-offs with each "mod". Ford doesn't employ engineers with Masters and Doctorates for nothing. They have found the best balance between NVH, emissions & performance....for the dollar.
And I am not so sure about these MIT graduates... A Superchips programmer can add 100 ft. lbs of torque and 50 HP on virtually every diesel out there. Yet Ford does not include on stock. What would be Fords cost on 1,000,000 of them? Maybe $50 each? Obviously they missed that one. And that’s a BIG miss. So either these programmers damage your engine or Ford's MIT grads are not getting with the program.
Last edited by SPL Tech; Mar 31, 2007 at 02:26 PM.
There are also emissions standards that the manaufactuere must meet. Ever see a chipped/tuned truck at those extreme levels take off? HUGE clouds of black smoke. Cool...in a manly kinda way but certainly woouldn't pass any EPA requirements placed on manufacturers.
The last sentance in my quoted post says it all.

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I had a tuner on my F-150 (04). Mileage stayed the same but I still had to use 91+. The 87 octane program simply allowed me to tune shift points and such. There was no gain. Certainly not "proof" but indicative of what hundreds of other users and the manufacturers of them will tell you.
Someone who reports they had such a large increase in MPG from a GAS tuner using the 87 program have more than likely calculated something wrong. Even the tuner manufactuers will tell you they don't tune for MPG. The tune for more POWER. You can't have both.
I love this V10 for towing. Overall, I avgerage 9.6 mpg - not the solid 10 I was hoping for, but little better than my 5.4 did on a similar trip. I think I could better with mpg now I that I have the feel of it. for the intersate, i stuck to ~70 mph @ ~2800 rpms and ocaisionally let it go in to OD, where it dropped to ~2200 rpms. Just playing around once, i let fall behind (down to ~ 58 mph) on a hill and then put to the floor to see how fast i could get back up to speed - no problem, it dropped gears (2nd) and popped up to ~3500 rpms (if I remember right) and in less than a minute I was backing off and cruising again.
The big difference here was performance - this thing pulls like no tomorrow. Although I was not in "mountainous" terrain, it was a hilly terrain. One long and steep enough that the state felt the need to add a truck lane - took that one on with out loosing any speed.
It was just plain effortless

This was also the madien voyage for my Prodigy brake controller - man what a difference that made. No more white knuckle'ing stops. The truck stopped as smoothly as it accelerated.
There are also emissions standards that the manaufactuere must meet. Ever see a chipped/tuned truck at those extreme levels take off? HUGE clouds of black smoke. Cool...in a manly kinda way but certainly woouldn't pass any EPA requirements placed on manufacturers.
The last sentance in my quoted post says it all.

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I had a tuner on my F-150 (04). Mileage stayed the same but I still had to use 91+. The 87 octane program simply allowed me to tune shift points and such. There was no gain. Certainly not "proof" but indicative of what hundreds of other users and the manufacturers of them will tell you.
Someone who reports they had such a large increase in MPG from a GAS tuner using the 87 program have more than likely calculated something wrong. Even the tuner manufactuers will tell you they don't tune for MPG. The tune for more POWER. You can't have both.

And what do you mean "extreme levels"?
Ford Trucks for Ford Truck Enthusiasts
And what do you mean "extreme levels"?

Extreme levels is anything over the 100+ more lb ft of torque that a tuner can provide to a diesel. Try that in a 4R100 and you'll have a nice pigsaw puzzle under your truck....unless of course you get it strengthed by one of the many aftermarket tranny builders like BTS.
Last edited by Monsta; Apr 4, 2007 at 12:47 PM.
If you are getting poor MPG try cleaning your mass airflow sensor. I increased my MPG from 10.5 to 13 for about $4.00. I'm sure that it has been mentioned before but I'll tell you again.
If however someone has any other inexpensive ideas on increasing economy (no snake oil venders please) I'd be interested. Thanks.
Both my "toy" trailer ( the one I use to haul my V-12 Packard around in when I dont want to risk driving it) and my boat trailer with ( 28 ft. Bayliner - 10 ft beam) weigh about the same. Roughly 10,000 lbs.
I have found the on board computer "fuel flow" guage to be dead accurate. With this qualification - obviously, it measures fuel FLOW instantaneously, and AVERAGES OUT fuel flow over whatever time parameter you set it for.
I have found mileage as low as 3.5 mpg in the middle of pulling heavy grades against the wind. On the open road, OVERALL towing mileage runs around 8 mpg. This is a nice improvement over my '91 2500 Series Suburban (which is a 3/4 ton truck) (which, incidentally was only a "mouse" or "350"). That only got 4.5 - 5.5 mpg towing the exact same loads.
As a side note, (realize this isnt applicable to your question about mileage when TOWING) WITHOUT a towing load, on LEVEL roads with a TAIL wind, in overdrive, constant speed of around 60 mph, with my 3.73's, constant throttle, I have seen as high as 17 mpg on the on-board computer. I have good reason to believe, as I noted earlier, this is dead accurate. One slight problem. Slightest worsening of these ideal conditions, and UNloaded open-road mileage goes right back down to around 13 mpg.
Last edited by 6686L; Jul 27, 2007 at 10:11 AM.
This was on a long very flat road and i went about 2 miles for each reading reseting after reaching the speed and holding steady for a few seconds with cruise control then reseting to get a reading. There was no noticable wind that day. Temp was high 80s and it was a lil humid at the time. 03 X V10 with 3.73s and all stock.



