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1997 to 2003 F-150 4.2L, 4.6L, and 5.4L equipped F-150s

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  #1  
Old Wed, December 15th, 2010, 12:00 PM
haten'chevs haten'chevs is offline
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Default Need some help

I've got a 99' 150 4x4 with a 5.4/auto payload package (7700) off road package with 3:73 posi which now has 110,000 on it. I've put headers on it, high performance COPS,new plugs, K&N FIPK, edge maf (put the orginal back in now as I thought that was the problem) and I also have a Flow master 3" into dual 2.5" exhaust.
It now runs terrible- the bottom end is just gutless and then at about 2500 rpm it REALLY comes on but on the low end or if it gets a load (like going up a hill) it acts like it has a miss or bogs way down. I've had bad cops in the past (owned it since new) and I really dont think its that because it idles smooth ect. ect. unlike any symptoms it did when I had a cop go bad. It runs fine when your not on the throttle (like when my wife drives it- I have a little heavier foot then she does) But if you really get on it, it falls on its face. Now that its cold (MN) it runs pretty good all the time- colder denser air seems to help it anytime.

I ASSUME I need a tuner to program it for the mods I've made-BUT which one? Its mainly a daily driver- But I farm so it does see some fairly heavy loads from time to time- the biggest being my pulling tractor at about a 9000 lb load.
Any help in the right direction is greatly appreciated-I'd like to get something bought ASAP.
Thanks
Rob
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Old Wed, December 15th, 2010, 12:52 PM
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Bill can definitely set you up but you'll have to wait until they get back from their vacation next week.
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Old Wed, December 15th, 2010, 02:28 PM
haten'chevs haten'chevs is offline
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Well I've been messing around with this for about a year- for some stupid reason- so I think a few more days will be fine.

Thanks for the vote of confidence!!!
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Old Mon, December 20th, 2010, 02:59 PM
haten'chevs haten'chevs is offline
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Do I need to wait for a reply from bill here or just call?
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Old Mon, December 20th, 2010, 03:22 PM
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You can try calling them to get the info you need and to set up an order.
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Old Mon, December 20th, 2010, 03:49 PM
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The three of us have pretty much been on the phones constantly since noon. Did we speak to you?
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Old Tue, December 21st, 2010, 08:38 AM
haten'chevs haten'chevs is offline
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yep- I talked to corey right in that 4 O'clock area-
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