Location: Among javelinas and scorpions near Tucson, AZ
Vehicle: 2005 Ford F150
Posts: 3,134
Quote:
Originally Posted by silverado kiler
just bought edge evo got some questions? i have a 2001 5.4 can i run this motor at 6000rpm without messing up too much stuff lol
Only your transmission. According to informed sources (Troyer), the Torque Converter will start to balloon at around 5400 rpm. If you don't care about damaging that bit of equipment, by all means - rev it to 6000!
Darn, whats the power curve look like for the 04-08 5.4 with just tuning. At what rpm do we start to see "diminishing returns"? So if one is not concerned about their TC what gains would one have going from 5400 - 6000 rpm?
Location: Among javelinas and scorpions near Tucson, AZ
Vehicle: 2005 Ford F150
Posts: 3,134
I've seen some power curves posted in these and other forums, but it was quite a while back. Torque is definitely dropping above 5000, as I recall. HP is falling off a bit later too. I honestly would not set a WOT shift above 5200, because I don't think it's going to do much for you. And, for the shift to complete properly, you'd have to put the rev limit at 5600. I'll see if I can find a power plot.
Edit: OK, this is not for the 2004-2008 model years, but it's the best I can do quickly. It's for the 2009 5.4L. As you can see, torque is dropping rapidly at the higher RPMs, but since HP is a "derived" value that's based in part on speed, it's only dropping slowly above 5K. http://dygytalworld.ehost-services13...62&postcount=1
Thanks Jack!
This statement came from the PHP link you sent:
"As you can see, the biggest gains were not on the top end but in the midrange... which is where you really need it! Notice that the stock AFR curve does not allow any WOT enrichment until about 4500 RPM! And you wonder why the trucks are always so sluggish off the line."
Isnt that the truth its very noticeable, you can feel the pickup once the threshold has been met (referring to OEM programming)
Only your transmission. According to informed sources (Troyer), the Torque Converter will start to balloon at around 5400 rpm. If you don't care about damaging that bit of equipment, by all means - rev it to 6000!
- Jack
thanks alot man! all keep it under 5400rpm then lol when i tryed customizing my stuff like shift points and rev limiter and all that, when i got done with it and started up my truck it was running ruff as hell like it was missing or something... whats up with that?? all i changed was shift points, rev limiter, and top speed limiter......
Location: Among javelinas and scorpions near Tucson, AZ
Vehicle: 2005 Ford F150
Posts: 3,134
Quote:
Originally Posted by silverado kiler
thanks alot man! all keep it under 5400rpm then lol when i tryed customizing my stuff like shift points and rev limiter and all that, when i got done with it and started up my truck it was running ruff as hell like it was missing or something... whats up with that?? all i changed was shift points, rev limiter, and top speed limiter......
Silverado - Try loading a tune WITHOUT opening the Custom Options menu at all. This is actually the way you should load the tune the first time around, but I doubt anything's been hurt. See how it behaves then.
If things seem all right, try changing things in the Custom Options menu one at a time! Except, you WILL have to manually check and set your Tire Size (TS) and Gear Ratio (GR) anytime you even open the Custom Options menu! Here's a link to a Q&A about Custom Options that should apply to both the Edge and the Gryphon: http://dygytalworld.ehost-services13...ead.php?t=1101
There's one other possibility: You have a dirty throttle body. This is a well-known phenomena that seems to show up right away when you load any tune that is not the stock tune. There's another link that talks about that: http://dygytalworld.ehost-services13...tml#bookmark13
It's near the end of this FAQ and it's titled: "My vehicle is having trouble idling after programming. Is something wrong?"
It's not hard to clean it up, if that's the case, and, since your truck is a 2001, I'd be inclined to think that MAY be the cause.
Silverado - Try loading a tune WITHOUT opening the Custom Options menu at all. This is actually the way you should load the tune the first time around, but I doubt anything's been hurt. See how it behaves then.
If things seem all right, try changing things in the Custom Options menu one at a time! Except, you WILL have to manually check and set your Tire Size (TS) and Gear Ratio (GR) anytime you even open the Custom Options menu! Here's a link to a Q&A about Custom Options that should apply to both the Edge and the Gryphon: http://dygytalworld.ehost-services13...ead.php?t=1101
There's one other possibility: You have a dirty throttle body. This is a well-known phenomena that seems to show up right away when you load any tune that is not the stock tune. There's another link that talks about that: http://dygytalworld.ehost-services13...tml#bookmark13
It's near the end of this FAQ and it's titled: "My vehicle is having trouble idling after programming. Is something wrong?"
It's not hard to clean it up, if that's the case, and, since your truck is a 2001, I'd be inclined to think that MAY be the cause.
- Jack
dude thanks so much! ima do that stuff tommorow and ill let u know how it goes forsure. but if i just put a tune on my truck like level three it will run fine! its starts running like crap when i customize it....but ill try what u said hopefully cleaning out that throttle body will help
mine shifts hard
when u floor it i spin in 2nd almost everytime lmao
wow..i know i prob aint gonna feel the power that much cuz i got all time awd... but it should def make a diff...i cant wait to try this thing..monday couldnt come any faster..
Location: Among javelinas and scorpions near Tucson, AZ
Vehicle: 2005 Ford F150
Posts: 3,134
Quote:
Originally Posted by silverado kiler
dude thanks so much! ima do that stuff tommorow and ill let u know how it goes forsure. but if i just put a tune on my truck like level three it will run fine! its starts running like crap when i customize it....but ill try what u said hopefully cleaning out that throttle body will help
Good! That's a clue then that the problem is related to the "customizing" menu.
This has happened once before as I recall. And, I seem to remember it being tied up with changing the WOT fuel. Do you remember if you changed that at all? If so, try leaving it alone. Adjusting shift points and max RPM should be safe, but still, try doing these things one at a time till you find the change that causes the problems. Timing is something else I'd stay away from. If you're using 91 octane gas in a 91+ octane tune, the timing is already advanced properly.
I'll see if I can find the thread (it was in another forum) where something similar to this happened. I'm not sure I can find it though, so don't hold your breath.
wow..i know i prob aint gonna feel the power that much cuz i got all time awd... but it should def make a diff...i cant wait to try this thing..monday couldnt come any faster..
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its very noticeable, you can feel the pickup once the threshold has been met (referring to OEM programming)
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