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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


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Old Mon, December 13th, 2010, 10:07 AM
Toigs325 Toigs325 is offline
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Default Popping sound during acceleration

The popping sound has only happened twice, down the same stretch of road, 2 minutes apart. Both were right after I really whomped on it. Could it have just been bad gas (most of the fuel I use is 89 octane 10% ethanol) or am I most likely running lean? Can a local shop check to see if I am running lean?

I have the stock intake but it is 3 hours away and is a pain to reinstall...it would take me at least a month or two to get my Gryphon if I tried to order it now with the holiday.

Thanks for your help guys
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Old Mon, December 13th, 2010, 10:43 AM
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Longshot270 Longshot270 is offline
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It might have been bad gas, might be overly lean, there are a bunch of possibilities. I wouldn't be romping on it too much because you are for sure running leaner than you were before adding the intake, no way to avoid that on a stock vehicle. You are going to need that MAF sensor recalibrated to compensate for the larger diameter tube around it.
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Old Mon, December 13th, 2010, 03:23 PM
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Quote:
Originally Posted by Longshot270 View Post
You are going to need that MAF sensor recalibrated to compensate for the larger diameter tube around it.
Is that what Bill does with the Gryphon or is that something I need to have done at a local shop? My buddy was going to run a meter to it and check on my fuel curves. Won a used Edge 15051 on Ebay today for $227 with shipping included...will be having that sent to PHP once I get it. I am thinking about getting the Gryphon upgrade with Performance 89 and Tow 89 tunes along with compensations for the CAI. It looks like its $25 for the firmware and case, and $60 per tune. Any idea if it is extra to have the CAI accounted for is is that part of the $60 per tune? No one is around PHP for me to ask right now

Thanks guys!!!
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Old Tue, December 14th, 2010, 09:06 AM
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Whaddaya mean there's no on around to ask? You just have to ask in the right place.

To answer your question, the CAI tuning (and any other necessary tuning modification) is included as part of the $60.00 file charge.

BTW - Good deal on your used programmer.

Take care.
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Old Tue, December 14th, 2010, 09:44 AM
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Thanks Bill!!! And Happy Holidays

I am trying to figure out why I misfired twice under WOT the a couple weeks ago...kinda scared me considering it has never happened before, I have 54K, no lights were thrown, and I have had the CAI on for about 6 months with no problems.

Should I send the Edge straight to you or can I try it in the truck without worrying about blowing something up? Maybe just increase the WOT Fuel a bit? Play with it for a couple hours and send it to you?

Excited!
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Old Tue, December 14th, 2010, 10:22 AM
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Based on the situation, I'd say that it kind of sounds like it was possibly a lean misfire. It's tough to say, though.

Get with me next week and we'll figure out what the best course of action is.

Thanks.
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Bring back Windows™ XP and 7.
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Windows™ 10 is only slightly less annoying!
Windows™ 11 is garbage!

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Old Tue, December 14th, 2010, 02:22 PM
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Bill...one more thing

The Evo I got off of Ebay only comes with the mount, cable, and programmer. It does not come with the CD or computer cable...Do I need these to upgrade to the Gryphon? Can I buy the cable and download the CD elsewhere?
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