question
Senior Member
Joined: Nov 2006
Posts: 1,033
Likes: 1
From: spring, texas
Sweet.
Originally Posted by Darnell@Hypertech
Malexander52,
You don't need an update to run 91 oct, since all of Hypertech's products have C.A.R.B. EO numbers the tunes have been tested on 91 octane since that is all you can get in Californa. On the new programmers it doesn't ask if you're going to run 87 or 93, it ask if you will be running regular or preimum instead. So to awnser your question there really isn't a reason for you to upgrade to a Max Energy as the tuning will be the same.
As for your second question, no Hypertech doesn't have any recomended settings on our website. I will take this in to consideration because maybe this is something we should have on our site.
You don't need an update to run 91 oct, since all of Hypertech's products have C.A.R.B. EO numbers the tunes have been tested on 91 octane since that is all you can get in Californa. On the new programmers it doesn't ask if you're going to run 87 or 93, it ask if you will be running regular or preimum instead. So to awnser your question there really isn't a reason for you to upgrade to a Max Energy as the tuning will be the same.
As for your second question, no Hypertech doesn't have any recomended settings on our website. I will take this in to consideration because maybe this is something we should have on our site.
Senior Member
Joined: May 2007
Posts: 1,573
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Originally Posted by Darnell@Hypertech
Malexander52,
I would assume that lean condition with K&N is caused the way the air is traveling across the MAF. If you look at your stock filter you can kind of see how it would do a really good job of straightening the air that flows through it. Now with the K&N more free flowing design the air isn't coming is as straight and as uniform as it does with the stock filter. Like most things air takes the path of least resistance, so were as with the stock filter the air traveled across the MAF one way, but with the K&N it is going across it in a completely different way. What this boils down to is the MAF isn’t getting an accurate reading of how much air is entering the engine. Now we ran into this on the 05 Mustang and developed tunes for the most popular air intakes and it is our plan to do that for the 04+ F150s at the first of the year.
I would assume that lean condition with K&N is caused the way the air is traveling across the MAF. If you look at your stock filter you can kind of see how it would do a really good job of straightening the air that flows through it. Now with the K&N more free flowing design the air isn't coming is as straight and as uniform as it does with the stock filter. Like most things air takes the path of least resistance, so were as with the stock filter the air traveled across the MAF one way, but with the K&N it is going across it in a completely different way. What this boils down to is the MAF isn’t getting an accurate reading of how much air is entering the engine. Now we ran into this on the 05 Mustang and developed tunes for the most popular air intakes and it is our plan to do that for the 04+ F150s at the first of the year.
The MAF is getting an accurate reading. The MAF xfer func. was set up in the PCM for the stock air box. The MAF doesn't tell the PCM how much #/min it is flowing, it tells it how many volts. The PCM uses the MAF xfer func. as exactly what it is "transfer function" as it scales the 0-5v to #/min.
Example...
VOLTS #/MIN
5 46.1257095336914
4.69600009918213 38.7647399902344
4.49300003051758 34.4828491210938
4.15000009536743 27.9192295074463
3.88499999046326 23.5380992889404
3.73799991607666 21.2947006225586
3.41100001335144 16.831729888916
3.09800004959106 13.2679395675659
2.81599998474121 10.3493003845215
2.70900011062622 9.35709285736084
2.59200000762939 8.39998340606689
2.32399988174438 6.48585081100464
2.16799998283386 5.5023250579834
2.08299994468689 5.0074200630188
1.99399995803833 4.53255891799927
1.89400005340576 4.06376314163208
1.78400003910065 3.57554602622986
1.6599999666214 3.04989004135132
1.52300000190735 2.52464389801025
1.45099997520447 2.2768349647522
1.37399995326996 2.0314519405365
1.28900003433228 1.78890895843506
1.19700002670288 1.54596304893494
1.08800005912781 1.29414200782776
0.962000012397766 1.03895795345306
0.811999976634979 0.788309991359711
0.740000009536743 0.686310529708862
0.606000006198883 0.534109175205231
0.526000022888184 0.450946807861328
0.0317210406064987 0
Stock intake with the MAF showing 2.32399988174438 VOLTS the PCM would then scale the value to 6.48585081100464 #/MIN.
Aftermarket intake, with the MAF showing 2.32399988174438 VOLTS the PCM would then scale the value to 6.48585081100464 #/MIN, but with the aftermarket intake the actual airflow in #/min could be 7.78302145004272 which is roughly 20% higher than stock or 1.2x. With the effects load has on certain PCM functions/tables. It is best to get the MAF xfer function dialed in as there are many tables that use load on any one axis.
Senior Member
Joined: Sep 2007
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From: The Barbary Coast
Originally Posted by Ftruck05
kinda looks like a wiener and a mouth I think he is the ya know and you are the mouth. That is some kinda $#it 5th graders do, kinda like spelling 80085 on the calculator.
Burn....
Burn....I get it now. Those are now commonly referred to as "emoticons". Icons which express emotions or feelings. It's what 8th grade girls do when text messaging. You know: the same 13 year old girls who swoon over boy bands & Billy Ray Cyrus' daughter.