Big MPG hit after MBRP exhaust install, looking at new tune

[D Fresh]

And to reiterate, I have a 54 mile flat-ish course I use to test. For testing purposes I use cruise control and I peg it at 65mph. And I test it a couple times over the course of a week to rule out any sort of weird ECU-cook in time variance or whatever.

Are you filling up your truck before and after and hand calculating your mileage? Or are you simply going off what the truck says?

Either way your testing method seems flawed. MPG tests should be hand calculated over an entire tank of your normal driving to really mean anything. Even if you're hand calculating after this "loop" the info you're getting is severely limited. You're only testing MPG under a very specific set of conditions.

When I'm comparing MPG on various things I even go so far as to fill at the same pump stopping at the first "click" to try to remove as many variables as possible.

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[tehschkott]

Are you filling up your truck before and after and hand calculating your mileage? Or are you simply going off what the truck says?

Either way your testing method seems flawed. MPG tests should be hand calculated over an entire tank of your normal driving to really mean anything. Even if you're hand calculating after this "loop" the info you're getting is severely limited. You're only testing MPG under a very specific set of conditions.

When I'm comparing MPG on various things I even go so far as to fill at the same pump stopping at the first "click" to try to remove as many variables as possible.

What even IS gas milage bros? It's just an ethereal figure right?

GTFO with that.

 

[D Fresh]

What even IS gas milage bros? It's just an etherial figure right?

GTFO with that.

I mean, you're the one that's all worked up over your "ethereal figure."
So I guess you should answer that?

If you want data to compare, it needs to be meaningful. A 65 mph "test loop" is not at all meaningful data. It is similar to the EPA's testing methods which we all know are severely flawed.

I'm sorry I tried to help. Next time I'll resist the urge to help another member who is ASKING FOR HELP.


GTFO with your questions and figure it out yourself, douche.

 

[tehschkott]

Okay I'll play.

Why would a single data point averaged over a 14 gallon tank be more meaningful or produce better data than multiple data points sourced from multiple tanks - some from the same tank and some from different tanks? If data varied widely between tanks I might agree but it doesn't. Or maybe it's better to say if there's variability between gas stations it's not yet reflected in the data.

It certainly doesn't account for a 5mpg difference I face here and now.

I have meaningful data to compare. I've controlled for the great many factors to a reasonable degree and I'm confident in the figures I'm getting back. The problem isn't one of data collection D-fresh. If that's even your real name!

I wonder what the D stands for.

No I don't.

 

[tehschkott]

I'm trying the battery unplug reset test tonight. If that doesn't work I'm replacing the oxygen sensors (both) and a replacement Air Charge Temp Sensor. Absolutely nothing says there's anything wrong with these things but I'm shooting in the dark here. I've certainly spent more running it down so far, this is among the least expensive and last options to eliminate for.

I do appreciate the input. Even you, D-Fresh.

 

[Trigganometry]

I'm trying the battery unplug reset test tonight. If that doesn't work I'm replacing the oxygen sensors (both) and a replacement Air Charge Temp Sensor. Absolutely nothing says there's anything wrong with these things but I'm shooting in the dark here. I've certainly spent more running it down so far, this is among the least expensive and last options to eliminate for.

I do appreciate the input. Even you, D-Fresh.

You need to get Forscan setup so you can first see if any codes are stored. Then you can look at all your sensors and what they’re reporting. If out of spec it will throw a code.

Now as far as bad MPG, my last 3 fillups I have had some of my worst mileage yet. I’m not driving any different. But it is in the middle of the winter here, winter gas and cold as crap outside. What it is, what it is…

 

[Superdannyboy]

Once I did my mods I stopped looking at my mpg's. Stock I never got past 19 it was usually 17. After the mods I've seen it down to 10.something before I updated the speedometer for my 33's. I just recently put a downpipe and put an updated stronger 93 performance tune and mpg's are slowly going up tank after tank. Just put the 93 daily tune because I kept spinning tires and mpg's are going up I'm around 13 lol ooo boy imagine if I can hit 14!

 

[FoMoCoDave]

Old thread, I only read pages 1 and 5. Just looking looking for info on MBRP exhaust.

Also read just today about the sparkplugs not lasting on tuned engines, causing a mpg hit.

Did anyone mention changing plugs and general check of the ignition system?

 

[AzScorpion]

Old thread, I only read pages 1 and 5. Just looking looking for info on MBRP exhaust.

Also read just today about the sparkplugs not lasting on tuned engines, causing a mpg hit.

Did anyone mention changing plugs and general check of the ignition system?

I know a few have changed theirs out but I don't remember if it helped any. I'm still running the stock plugs with my Livernois tune and so far so good after 2 years.

 

[Mustang2Ranger]

I changed to colder plugs at 17k when I did the tune and downpipe, for safety not performance, plugs still looked mostly new, kept as spare in 4x4 kit

If not modified probably would have still changed them at 50k not 100k like the manual says (earlier if towing), these motors are hard on the plugs in general

Going to check again at 50k

And more of a preference, do away with the MBRP junk, get Gibson (not affiliated with either, just like Gibson)

 

[FoMoCoDave]

I'm going to a muffler shop and get a price for some work. Remove muffler and resonator then replace with... what muffler?.
Any suggestions on a lower toned louder muffler replacement. Whos running road runner glasspacks?

 

[Racket]

I see you 'resolved' this quicker by taking off the tune and reloading it.

I'm thinking the drive-by-wire recalibration might help too?

I would hope some more mixed driving will fix things.

 

[Superdannyboy]

I'm going to a muffler shop and get a price for some work. Remove muffler and resonator then replace with... what muffler?.
Any suggestions on a lower toned louder muffler replacement. Whos running road runner glasspacks?

I think a well known muffler shop should know just the muffler for you. Even if you have to drive 100 miles. And remember they sound deeper with time.

 

[Old NaCl]

These Rangers seem to be a lot like Glocks and less like 1911s. Best way to get a Glock to malfunction, modify it.

 

[TOMDEE]

Solved: https://www.ranger5g.com/forum/thre...install-looking-at-new-tune.17016/post-347426

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I just installed a MBRP exhaust and my MPG dropped from 16.6 to 14.6 - which I have a problem with. I have the FPP tune and have had it for 12+ months or so and I like it a lot. I assume the exhaust is throwing things off and mucking with my MPG. I'm thinking about changing up the tune.

I'm angling towards

• Unleashed Tuning
• 5 Star tuning
• Livernois tuning

QUESTIONS
1. Do any of these tunes provided by the above vendors require keeping the tuner plugged in?
2. What is the most supported tuning appliance/programmer? I'm angling towards

• SCT/Bully Dog BDX
• SCT/ X4

I don't want to keep having to buy programmers between vendors and it looks like I don't have to if I pick the right programmer appliance.

--

Other data

I'm not drag racing but I drive the piss out of my truck, on highway and offroad both. I put 29,000 miles on my truck in the first year of owning it and I expect to do the same next year.

I'm on 33in tires and have a small lightweight camper (think Go Fast Camper) which has added some weight and air drag. The 16.6mpg I was getting is WITH the camper on it (I dropped from 17.6 mpg putting it on).

I always run highest grade fuel available from the pump - usually between 91~93 octane.

I'm soliciting input on tunes, and programmers. Your input widely welcomed.

--------------
Frenchy, your feelings about 5 Star have been noted. The rest of you shut up about his feelings. If you have some data to debate 5 Star, great. I don't care if "he always does this with X".

Thanks in advance.

I HAVE THE "FORD" PERFORMANCE TUNE, USING 91 OCTANE, I'M GETTING 26MPG SO I THINK YOU HAVE A SERIOUS PROBLEM.

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