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4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.
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Old 07-07-2011, 02:23 PM   #21
WhiteFoxGT
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Most likely a COP or 2 goin south. Any codes?
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Old 07-07-2011, 03:16 PM   #22
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Most likely a COP or 2 goin south. Any codes?
only codes is for the o2 and thats because i don't have the MIL for the o/r x pipe or a hand tuner to disable it. The car misfires during cold start at idle, but very little misfire nothing crazy. I tried to use the IAC mod to drop the revs quicker and it started to misfire even more during idle and it caused the car to smoke out the tail pipes when I was coming to a dead stop. But without the IAC mod the idle is normal and it doesn't smoke out the tail pipe.
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Old 07-08-2011, 01:36 AM   #23
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I know this is old but extremely helpful! So I am suspecting I have a bad coil(s) on my 02 GT. So basically what you guys are saying is while my engine is running, unplug ONE COP and then if I hear a difference in engine sound take note then plug it back in. Then check the next and see if there is a difference and take note. Whichever one(s) DONT make the engine sound different are the possible bad ones that I should probably think about changing?

Thanks so much!
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Old 08-01-2012, 02:13 PM   #24
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Well after working with Mark at Weapon X for over a year, doing a number of field tests and beta testing on new designs Back in January of this year i received a set of the current production EFX COPs for extended testing.

Having run them since that time, most recently on a 440 mile round trip in 95°F to 100°F+ heat, I am pleased to say that the heat problems I experienced with the earlier designs have been overcome. The new design performs flawlessly in the high temperatures and delivers the tweaked performance I described in my initial impressions described earlier in this thread--and has been doing so for 8 months and 20k miles.

I also have to say that I have never dealt with a manufacturer/vendor that was any more dedicated to working with me to get things right. Kudo's to Mark and WeaponX for their commitment to their products and customers!!!
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Old 08-01-2012, 06:15 PM   #25
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Great to hear Cliff! Your car is looking nice, a little different than what I remember. I am really digging the R/W/B stripes! I reallllllly need another mustang....
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Old 08-01-2012, 06:23 PM   #26
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I went to a local sign shop almost a couple years ago now, explained to the owner what I was doing, and that I just needed three pieces a couple inches wide by 24 inches. He rummaged through his scrap bin and came up with enough to stripe five cars.

I asked him what I owed and he said "You're making a flag aren't you? Get the Hèll outa' here..."
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Delta Force tuned, Steeda UDPs, Ralco flywheel,
RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq


Engineering is, at its base, making what you want from what you have.
At its extreme it is making what you want from what you can get.
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Old 08-01-2012, 06:23 PM
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2001, 2003, 46, coil, connector, cop, ford, gt, ignition, mustang, ohm, plug, problem, problems, testing

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