NOTE: See my followup (8/1/2012) post at the end of this topic for my final WeaponX COP results and position!!!
I at last got a set of WeaponX COPs, in part because it was a a price I could not ignore, and in part because I found their design and arguments for same compelling
Most of you have read my rants re: after market COPs ("a spark-is-a-spark"), however hopefully you will remember I also stated the Weapon X units to be the only ones that represented any change, and perhaps offered some improvement from the OEM profile units made by MicroTech
--for Ford and anyone else that has a favourite color and would like to see their name on a COP--well, I have to tell you I am impressed...
That said, one thing to get out of the way right up-front is that if you are looking for under hood colour or "bling" look elsewhere--once installed the Weapon X COPs are barely noticeable:
However even when I just started the engine after installing them they were quite noticeable. The engine started with immediately and idled smoother than it ever has, and in a quick trip around the block the exhaust tone was quite changed--more distinct and staccato as though things were working better.
Today I took it out on SR-305 (a nice dead straight 3 mile run in the middle of nowhere) a few miles from here and did some "0-60" and "1/4 mile" runs using my trusty old G-Tech Pro. The results were consistently 0.5% to 1.2% faster (this may not sound like much, but it's 0.07 to 0.15s in a 12.9 1/4 mile) than anything I had previously seen (the G-Tech Pro and SR305 are my baselines), which surprised the crap out of me--AKA the "spark-is-a-spark" COP skeptic.
It would seem that the the arguments they make
are valid, I will post more about this (like the fuel economy claims) later, however for now I am very impressed--and I don't get that way easily!
They are not cheap*--coming in at $50 to $200 more (depending on where and what you buy) than the OEM look-a-like units. However my initial impression is that they blown the other out of the water, if I was running any sort of power adder they would be "must have"--even n/a if yoiu can swing the cost you will not be disappointed...
* - An unfortunate fact of life is that if you buy the cheapest there is, there is a good chance you will end up with the cheapest there is...
Because of overheating problems (I burned up two sets of the Weapon X COPs in this summer's Florida heat) I can not recommend these coils. The manufacturer worked closely with me to diagnose the problem (too much heat being passed in to the COP because of its being inserted down into the plug well), and provided me with a replacement set--however that set also burned up in less than 2k miles, misfiring and failing to fire at all (no start) because of heat soak after a short stop, after a long run. I had to let them cool for 30+ minutes before the engine would start.
Reinstalling the stock COPs immediately corrected the problem, the WX COPs (both sets) all had that familiar burnt insulation smell when removed.
I was advised they were working on improving the design and insulation, however I have had no further communication from them in a couple months.
NOT recommended at this time!