Coil on plugs
 

Does anyone have an opinion on this? Any help would be greatly appreciated. They came stock on my GT, I just want to know if I should swap them out, or if they work as good as they say they do.

swap them out to what? it's one of the best ignition systems you could ever have. Each plug has a coil directly attached to it giving you minimum distance to make the current travel and as close to no degradation in voltage at all as is technically possible.

There's nothing to gain until you HAVE to do it. EDIT: Having to do it means you knew going in to whatever wicked mod you're doiing that it would be necessary and complicated.

Someone told me they were junk, and I should get a accel or MSD ignition, the only thing is neither one carries the coil onplug system.

Okay, say I keep them, I have seen coils that produce 60,000 volts, will I need a different type of spark plug to handle that? The stock COP only has about 20,000 volts.

someone doesn't know what they're talking about... and that's the way it is.

Ford designed this ignition system very well and credit goes to their management for allowing their engineers to spec it. If you understand the basics of electronics and electricity, you already know why. Shorter wires are better than longer ones. A system that works perfectly 100% of the time is better than one you have to tinker with to keep working. A system that just plugs in is way nicer to use than one you have to re-engineer your whole car to support.

Voltage is going to be part of the equation. Any spark plug can conduct any voltage. Higher voltages are harder to "blow" the spark out on but you don't run 20lbs of boost so you don't need it. The biggest thing you can find is almost never the best suited to any particular purpose. When you run so much boost or nitrous that you can't keep the fires lit, then you need an MSD or accel etc...

Thanx for clearing that up, and for taking the time to do it. I appreciate that!!

r3dn3ck is right. I have never heard of anybody needing to upgrade the ignition system on a 4.6 COP setup, not even a TT Cobra putting over 800 hp to the wheels. It really sounds like you are listening to the wrong people, they obviously have zero concept of electronics and ignition systems. Keep listening to the fellas on this forum, some of them get it.

If you go to a hotter setup like a blower/turbo/nitrous then you'll want to go to a "colder" plug. Usually for nitrous it's recommended by people who know the specifics (not me... I'm an NA guy) that you go two heat ranges colder, for blowers it depends on your boost level and those are usually included with the blower kit.

no prob. There's a gob of cr4p info out there being bandied about like it's the God's honest gospel. Almost all of it is 100% BS. You don't need to change things from the way they are until you make significant changes. I'd engage a good mustang tuner to counsel you on what your goals for the car are and what it's gunna take to get you there.

In the future I will be doing a S/C, probably a procharger. Will that cause me to make that swap?

nope... nothing you can drive on the street will require you to change from COP. It's good to unbelievable hp levels. When it becomes and issue, then the KB boost a spark is called for and you still don't have to change.

You never need to change it if you can put gas from a pump into the car and drive it.

Agreed with redneck there is no reason to change at all from a C.O.P. setup at all.

Thanx again guys, I was hoping this guy was all wet, thanx for proving it to me. When I do get the Procharger, is there anything you can tell me to make it an easier swap? I like to do cams also, are they a big pain in the ass? I did them before, but that was on an engine that had only one cam, and a bunch of push rods. I don't know if i told anyone here, but my last engine of interest was a 426 HEMI, 1968 1/2 Plymouth Road Runner. Now I'm trying to get that same nailed to the seat feeling. Any help you guys can be will be of great help to me. I do have a need for speed, but am a little smarter now as to when to use it. LOL