There wil always be skeptics with just about anything you post, so don't let it bother you. I never knew how much idling kills the mileage until I got this new truck with the all the computer tracking info. It just kills mpg. The taking off from stops kills it some but sitting at lights, etc, you can sit there and watch the average disappear in a hurry.

 

[Hey, c.frank47, it's hard to get good mileage in all these East Texas hills![/QUOTE]

Most def, and i'm a firm believer in Sammy Hager's philosophy (can't drive 55) I'm not sayin I speed I just get to the speed limit in record time

OP, When you get your tunes from PHP and take your trip please repost your gas mileage and driving conditions as an update. I hope that with everything you have done to your truck turns out to be worthwhile for you and maybe more of us can duplicate your success. Good luck and be safe on your trip.

 

Everything said is advertisers' hype almost word for word.
If just MSD coils were used, they don't muti spark by themselves. The PCM closes ground to the coils one time, to begin combustion.
Short headers loses torque.
Larger TB loses torque and fools the Mass Air meter calibration as well as fuel injector calibration..
I would like to put a Scanner on that motor and look at the parameters full time to see what it's doing.
Driven at normal speeds and RPM does not use all that
"extra air' he thinks is doing the job.
How much air does a 262 cu in engine pass at 65 mph?
Certinaly not helped by headers, TB, K&N or mufflers.
This guy runs on a lot of hype instead of the science behind the operation.
I admitt the fan could give back some throttle response and maybe the pullies but not the rest of it, to that degree.
Two things.
Is the engine running way to lean to not use the fuel?
Is the power up, to use less throttle opening?

 

we will see how much longer this motor has left if it is running lean... Lt headers are the best, do not get a larger throttle body. Id be happy with 16 all together. does he have a little prius pushing him up to speed? I would be watching everything on that motor closely if you are pushing that much MPG out of a npi 2v 4.6. A. it's old, B. you have no idea how it was ran by the previous owner.

 

a 4x4 V8 getting 27mph highway on ethanol blend? And I'm santa. No offense, OP- but your videos just sound like an inexperienced buyer that is swayed by marketing hype. 310 hp with a canned tune, efan, intake and exhaust? I have efans, high-flow exhaust, intake, and a customer tuned programmer and I cant see 18mpg highway doing 65 in a tiny 2wd V6 with a manual trans

Short trips are always the best mileage. I've seen 25 going just 150 miles. I'd like to see you do 300+ miles and retest your mileage.

 

Wow I think that posting something positive would upset so many people . If you can think of another way you all would like me show this to you all I'm all ears. I don't have any check engine lights on and the truck runs beautifully I was hoping it would be a little quicker than it is when I was done but oh well you cant have it all can you maybe custom tunes will pick up the pace. Its still not too bad though.

BTW has anyone ever be able to get a hold Power Hungry Performance on the phone? I have called close to 20 times and they have never picked up.

 

On stock tires I'm 21-23 MPG highway

 

I don't doubt that you got that kind of mileage for a single 119 mile run.. If I filled up after I did a straight hwy run like that, I'd bet I'd get the same kind of numbers too..

On my weekly commute to work and home, my GPS tells me I'm only averaging something like 38 mph for the actual 'driving time' The 'overall' mph average is usually around 34 mph. When I fill up, it's usually around 12 gallons or so. (1/2 tank). Usually works out to be between 14- 15 mpg.

Anyway, I'm glad you found something that works for you! Some spend that kind of money and don't see any kind of ROI.. If you can keep up those kind of numbers over the long haul, you should see some ROI eventually...

Mitch

 

This thread is not about your best mileage homoraptorous. f150online does not revolve around you. jk! don't de-friend me

25 mpg would be nice, i squeek 17 on the highway. But i am your "above average" speeder on longer trips

 

I think its possible as a one time thing. Perhaps doing some drafting behind a semi and all. MSD coils are no different then Motorcraft or any other coil there was no gain there. with the old ignition MSD could do the Multi spark thing.. I have a full on MSD ignition in my Mach I and it was a huge improvement over stock but MSD coils alone will not make multi spark ignition on a modular engine. Short headers have been dyno proven to give no gain. you say you get 16 in town and 18.5 combined and I think thats believable for sure..

 

That seems to be a very tall order for the folks at PHP these days. You'd think that a company that has grown that much would, at the very least, hire someone just to answer the phone, relay messages, etc.

Very frustrating.

 

I don't think you ran the tank down far enough to get a real valid usage figure - even the same pump on the same day can shut off at a different fill level. Now, if you burned through a full tank I think it would be a lot more valid.

 

One red flag I noted about this is the statement that no improvement in power was felt for all the mods done and repeated a second time.
.
This is more proof that the headers, cat back, air intake changes and coils, plugs etc has done nothing for power.
The rule is you can't feel less than a 10 hp change or hardly see it in a timed run.
.
The only way left to rasie fuel milege is to starve the motor of fuel since the basic block displacement 'minus' the intake restrictions of the intake manifold, head ports and valves, determine the max air that can flow in and be combusted as an equal amount of exhaust gas by total volume, at any given RPM "at "wide open throttle". This is called 'volumetric efficiency'.
Note that the only thing that changes with air in, is a phase change by combustion and gasflow 'speed' out, increases. The total volume through put does not change.
.
A low throttle plate opening resticts airflow by intent to very low flow, to control engine power for normal driving. At this point, the mods have no effect on such low flow rates.
Doing anything on the inlet side short of going into the motor cannot add any more airflow.
.
The only thing that can increase airflow through the motor is RPM, translated as CFM and a rise in outside barometric pressure that is the force that charges the cylinder with air during the intake stroke.
.
Many people run out and spend this kind of money and find out the hard way they got little in return for the investment on a stock motor, from such reports.
.
What was the total retail cost of all this hardware and software?
Where are the long term fuel trim tables (LTFT) and where are the short term fuel trim (STFT) tables at? That would be very telling.
.
If the aftermarket program made changes to these tables to keep them from generating lean codes, then the motor is being forced to run lean.
This would tend to improve mileage and you won't get any more power out of a lean running motor no matter what else is done.
.
The amount of fuel that is injected into the air stream determines the overall power of air expansion within the cylinder, within normal A/F ratio limits.
.
The fuel does one other important thing. There has to be enough 'left' after combustion to keep the cylinder cool to the point it does not cause hot spots, pre-ignition from plug tips, excessive exhaust valve temps, and any other causes short of carbon buildup or add so much heat to the cooling system that it overheats.
.
I hope to be forgiven for looking at this from a science and design point but it cannot be ignored because all engine designs are subject to the same parameters.
A report of performance outside the norm has to be looked at closely for errors, mis calculation and false determinations or grosse changes outside the norm that are willing to be accepted.
This is just a discussion about the technicals of the subject so there is some foundation to it and not just circumstance trying to be used as evidence without investigation..
Good luck.

 

on the interstate the soft tonneau covers seem to help MPGs, on my interstate trips going from college home i stop just above a half tank and top off which pump to pump is about 186 miles(downhill gradient) or so with cruise control at 70 virtually the whole time i got about 17mpg and with the addition of the soft tonneau cover ive seen a best of 19.7. Going back to school(uphill gradient) half tank again give or take 2-3 miles distance i got about 13.5mpg and with the cover im getting about 16mpg give or take a few tenths, again cruise control 70. also have a 5.4 4x4 with 3.73s

 

I think its entirely possible with all the mods he says he has. Coupled with a grandpa like driving style. Esecially also on stock wheels. My 2010 4.6 stx 4x4 gets 19+ the majority of the time but i granny it and i drive rural roads at 45-50 mph with little stopping. Im sure that helps. Sometimes when i leave my house for work in the morning i drive straight to work never stopping once for 16 miles.