2011 F150 Volant intake MPG drop
Senior Member
Joined: Dec 2011
Posts: 443
Likes: 0
From: Durham, NC
there is so much mis-information in this post i don't know where to begin.
1. If the maf transfer function is skewed, it's skewed. Whether or not it is within a range that may be correctable or not is immaterial - as you simply do not know without measurement.
Worth the risk, given the tack records of most aftermarket cai's not using enough represenatative vehicles to test this throroghly? No.
Worth the risk, given the tuning shops on here are writing corrected transfer functions for most of these intakes, which they would not be doing if it was not needed? No. Obviously, the pcm is not able to correct, hmmmm?
The tuners would not be wasting all that time & effort to write tranfer functions for each and every intake if it wasn;t necessary - i'm sure they have better things to do. Additionally - some of the canned devices are now shipping with maf-tf-corrected tuning. Why do you think that is? Hmmmm?
Loud does not equal power - it just means it poorly designed.
Fact -the stock intake and exhasut already far outflow the needs of that engine. Changing either buys you nothing.
Please - do the research before stating bs. Thanks.
Mgd
1. If the maf transfer function is skewed, it's skewed. Whether or not it is within a range that may be correctable or not is immaterial - as you simply do not know without measurement.
Worth the risk, given the tack records of most aftermarket cai's not using enough represenatative vehicles to test this throroghly? No.
Worth the risk, given the tuning shops on here are writing corrected transfer functions for most of these intakes, which they would not be doing if it was not needed? No. Obviously, the pcm is not able to correct, hmmmm?
The tuners would not be wasting all that time & effort to write tranfer functions for each and every intake if it wasn;t necessary - i'm sure they have better things to do. Additionally - some of the canned devices are now shipping with maf-tf-corrected tuning. Why do you think that is? Hmmmm?
Loud does not equal power - it just means it poorly designed.
Fact -the stock intake and exhasut already far outflow the needs of that engine. Changing either buys you nothing.
Please - do the research before stating bs. Thanks.
Mgd
Senior Member
Joined: Aug 2010
Posts: 1,185
Likes: 0
From: Cabot, AR
Why are you running 93 octane gas?? I see people post blogs about these high mpg ratings and I just find it hard to believe that if your stock motor is getting that good of gas milage then why would the people at Ford list the mpg rating on the factory sticker to be 14-19 mpg? My truck is a 4x4 and I work with a guy with a 2012 truck with my same setup and he is getting the same mpg as me. I live in Ohio and I would venture to guess that where you live and the roads you drive play a big role in mpg. Plus the regulation on the quality of gas that your state allows will affect things. That being said I plan on keeping the system on and will continue to post the results that I get. I like the quality of this item, it is well built. I've also seen blogs where people state that their truck dies out at over 4000 rpm and I can say that that is a lie with mine, it has NO PROBLEM hitting the upper RPM's.
Octane recommendations
3.7L V6/5.0L V8/6.2L V8 engines
Your vehicle will run normally on 87 octane regular fuel. Premium fuel
will provide improved performance.
page 393
I am purchasing Shell 93 octane E10 on Monday's at 87 octane price. I drive 42 miles round trip, daily, 60% two lane highway, 40% stop & go - in town traffic. My 2wd truck specs are in my signature.
On a side note, the 2011 Mustang sales brochure states the EPA fuel ratings were taken while using 91 octane fuel.
James
Technical Article Contributor
Joined: Apr 2009
Posts: 10,697
Likes: 14
From: In the fast lane from LA to Tokyo...
there is so much mis-information in this post i don't know where to begin.
1. If the maf transfer function is skewed, it's skewed. Whether or not it is within a range that may be correctable or not is immaterial - as you simply do not know without measurement.
Worth the risk, given the tack records of most aftermarket cai's not using enough represenatative vehicles to test this throroghly? No.
Worth the risk, given the tuning shops on here are writing corrected transfer functions for most of these intakes, which they would not be doing if it was not needed? No. Obviously, the pcm is not able to correct, hmmmm?
The tuners would not be wasting all that time & effort to write tranfer functions for each and every intake if it wasn;t necessary - i'm sure they have better things to do. Additionally - some of the canned devices are now shipping with maf-tf-corrected tuning. Why do you think that is? Hmmmm?
Loud does not equal power - it just means it poorly designed.
Fact -the stock intake and exhasut already far outflow the needs of that engine. Changing either buys you nothing.
Please - do the research before stating bs. Thanks.
Mgd
1. If the maf transfer function is skewed, it's skewed. Whether or not it is within a range that may be correctable or not is immaterial - as you simply do not know without measurement.
Worth the risk, given the tack records of most aftermarket cai's not using enough represenatative vehicles to test this throroghly? No.
Worth the risk, given the tuning shops on here are writing corrected transfer functions for most of these intakes, which they would not be doing if it was not needed? No. Obviously, the pcm is not able to correct, hmmmm?
The tuners would not be wasting all that time & effort to write tranfer functions for each and every intake if it wasn;t necessary - i'm sure they have better things to do. Additionally - some of the canned devices are now shipping with maf-tf-corrected tuning. Why do you think that is? Hmmmm?
Loud does not equal power - it just means it poorly designed.
Fact -the stock intake and exhasut already far outflow the needs of that engine. Changing either buys you nothing.
Please - do the research before stating bs. Thanks.
Mgd
Member
Joined: Sep 2010
Posts: 57
Likes: 0
From: Gardner, ma.
I love these forums, truly. The cold air filter article is great and informative. Good info offered with factual, statisical support is hard to argue with.
I have had 2 Lightnings in the last 2 years. One with the open element a'cleaner and exhaust plus a few things. While it was indeed faster than my new one a 2000 bone stock, it also had a 4 lb lower pulley and a tune, yes it sounded much better as well, but it had a lot more going for it to produce the sound.
The new stock one is not as fast for apparent reasons. I had thought about the cat back exhaust which I will still do and the cold air or open filter. I will not do it now unless I go with another 4-6 lb lower. Open to more info here, but if I add boost 4-6 lbs I assume the more open a'cleaner plays a more significant role??
So, just a better square drop in element or a whole new set up??
I am 66 an old motor head from the 60's and the Muscle car days, back when things were more simple. These new computerized motors and all the new technology has me outclassed knowledgwise. I am learning as I go, but will never live long enough to catch up!
So any and all advice/input is welcomed. thanks to all who contribute such great factual information to this and the other forums. Ken
I have had 2 Lightnings in the last 2 years. One with the open element a'cleaner and exhaust plus a few things. While it was indeed faster than my new one a 2000 bone stock, it also had a 4 lb lower pulley and a tune, yes it sounded much better as well, but it had a lot more going for it to produce the sound.
The new stock one is not as fast for apparent reasons. I had thought about the cat back exhaust which I will still do and the cold air or open filter. I will not do it now unless I go with another 4-6 lb lower. Open to more info here, but if I add boost 4-6 lbs I assume the more open a'cleaner plays a more significant role??
So, just a better square drop in element or a whole new set up??
I am 66 an old motor head from the 60's and the Muscle car days, back when things were more simple. These new computerized motors and all the new technology has me outclassed knowledgwise. I am learning as I go, but will never live long enough to catch up!
So any and all advice/input is welcomed. thanks to all who contribute such great factual information to this and the other forums. Ken
Senior Member
Joined: Nov 2009
Posts: 1,712
Likes: 1
From: NC
There is so much mis-information in this post I don't know where to begin.
1. If the MAF transfer function is skewed, it's skewed. Whether or not it is within a range that may be correctable or not is immaterial - as you simply DO NOT KNOW without measurement.
Worth the risk, given the tack records of most aftermarket CAI's NOT using enough represenatative vehicles to test this throroghly? NO.
Worth the risk, given the tuning shops on here ARE writing corrected Transfer functions for most of these intakes, which they would NOT be doing if it was not needed? NO. Obviously, the PCM is NOT able to correct, hmmmm?
The tuners would not be wasting all that time & effort to write tranfer functions for each and every intake if it wasn;t necessary - I'm sure they have better things to do. Additionally - some of the Canned devices are now shipping with MAF-TF-corrected tuning. WHY do you think that is? Hmmmm?
Loud does NOT equal power - it just means it poorly designed.
FACT -the STOCK intake AND exhasut already FAR outflow the needs of that engine. Changing either buys you NOTHING.
PLEASE - Do the research before stating BS. Thanks.
MGD
1. If the MAF transfer function is skewed, it's skewed. Whether or not it is within a range that may be correctable or not is immaterial - as you simply DO NOT KNOW without measurement.
Worth the risk, given the tack records of most aftermarket CAI's NOT using enough represenatative vehicles to test this throroghly? NO.
Worth the risk, given the tuning shops on here ARE writing corrected Transfer functions for most of these intakes, which they would NOT be doing if it was not needed? NO. Obviously, the PCM is NOT able to correct, hmmmm?
The tuners would not be wasting all that time & effort to write tranfer functions for each and every intake if it wasn;t necessary - I'm sure they have better things to do. Additionally - some of the Canned devices are now shipping with MAF-TF-corrected tuning. WHY do you think that is? Hmmmm?
Loud does NOT equal power - it just means it poorly designed.
FACT -the STOCK intake AND exhasut already FAR outflow the needs of that engine. Changing either buys you NOTHING.
PLEASE - Do the research before stating BS. Thanks.
MGD
And Ken - you really need to start your own thread.
IF the MAF transfer is skewed - its skewed - your right. but simply changing out the air filter isnt going to force the truck air. Its only going to draw what it needs. While there are many different designs to CAI, and exhaust's to say they are not worth it are misleading. OBVIOUSLY to get the best use of it, is after you complete the setup you get a custom tune. But its not necessary unless you start to code out. Here in Texas where Heat plays a major factor 10 of 12 mo. a year you can definitively feel the difference. COLD AIR INTAKES mean just that. When I romp my gas pedal I can hear my intake suck in massive amounts of air, and with bigger exhaust pipes comes better performance. Most importantly you want Cooler air, so the less bends in the intake the less it will heat up. So in South Texas I do not recommend a open engine bay air filter as it will get really hot under the hood and breathing that in no bueno. Im currently pushing 319RWHP, 342 lb-ft - Custom tune w/Mods of course. BS? Do not be so sensitive. I do stand corrected LOUD does not necessarily mean power... but I do like to hear the whistle of the intake/blower, and motor working hard.
Senior Member
Joined: Nov 2009
Posts: 1,712
Likes: 1
From: NC
And just how does it know how much air it's getting and whether or not it should increase the air flow?
Thread Starter
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Member
Joined: May 2012
Posts: 11
Likes: 0
Okay to update everyone on this post... I towed my 30 ft. travel trailer with this system and was NOT happy with the noise. SOOO the Volant System has been removed from my truck and the stock system put back on. I will say that I did get a little better gas milage with the Volant Ram Air System and regardless of people knocking the "Butt Dyno" my 5.0 was more responsive with it on. That being said though the truck was way too loud under load and I think that the people that posted to this site were right by saying it isn't worth it. It's not like the truck is underpowered! Thank-you to all for the comments and KEEP BUYING FORDS!