Preferred COP's?
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Fleet Mechanic
Joined: Nov 2001
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From: Corpus Christi, TX
Preferred COP's?
I know Motorcraft/Autolites are the preferred plugs to use, but what about the COP's?
94k miles on the original plugs and cops and just this weekend she started coughing and sputtering. I can't wait to see what condition the pluggies are in!
94k miles on the original plugs and cops and just this weekend she started coughing and sputtering. I can't wait to see what condition the pluggies are in!
Post Fiend
Joined: Jan 2002
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From: USA
My thoughts are stick with oem !
Becareful using aftermarket plugs or coils, the ecm 's in these trucks are very finicky on the return signals and have been known to misfire more often with non oem components.
Rich
Becareful using aftermarket plugs or coils, the ecm 's in these trucks are very finicky on the return signals and have been known to misfire more often with non oem components.
Rich
Elder User
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Originally Posted by joe galas
I just purchased a set of high performance Granatelli coils from Jd's but they have not been shipped from Granatelli yet, Going to install with Denso it16 iridium plugs
I am interested in the granatelli coils and boots too. How much did they cost? Let us know if you see any performance gains.
Thanks
Elder User
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Originally Posted by krewat
Looking into my crystal ball, I see... here it comes... here it comes... NOTHING!
If these can add 15 hp and 17 ft lbs to a 4.6 they should be able to add even more to the V-10. There is a dyno comparision in one of the current mustang mags.
Post Fiend
Joined: Jan 2002
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From: USA
Oh ,Here we go ,the aftermarket gods have awakened !
15 hp and 17ft/lbs and a dyno sheet ta prove it!!!!!
yea I bet they even give ya 10mpgs more mileage!
just like the kn/fram airhog air filters
When will people just leave things alone and drive the vehicles for what they were intended for work trucks!
This could get interesting
Sorry Munkey Threads been high jacked
Rich
15 hp and 17ft/lbs and a dyno sheet ta prove it!!!!!
yea I bet they even give ya 10mpgs more mileage!
just like the kn/fram airhog air filters
When will people just leave things alone and drive the vehicles for what they were intended for work trucks!
This could get interesting
Sorry Munkey Threads been high jacked
Rich
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From: Long Island USA
Originally Posted by mizzitch
krewat
If these can add 15 hp and 17 ft lbs to a 4.6 they should be able to add even more to the V-10. There is a dyno comparision in one of the current mustang mags.
If these can add 15 hp and 17 ft lbs to a 4.6 they should be able to add even more to the V-10. There is a dyno comparision in one of the current mustang mags.
THEN install those aftermarket cops and plugs.
THEN, do another 10 or so dyno runs, preferably on the same dyno (an absolute must!).
Then, post the dyno graphs.
Here's my reasoning, using my 2001 V10 as a fer-instance:
My 2001 V10 puts out almost NO carbon-monoxide. So little, as a matter of fact, that the emissions tester showed ZERO.
Carbon monoxide is a result of incomplete or inefficient burn. Either too lean or too rich, the CO goes up.
If there was any more gasoline in the cylinder that could have been burned, the CO would be higher.
There are no emissions devices that lower CO. The only thing that lowers CO is a totally efficient burn.
I can see using higher-voltage coils and better plugs (or a smaller gap) when using a supercharger, or some serious cams.
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Once people realize that OEM is normally junk then we can get somewhere with this topic. Examples of OEM junk - air filter that needs to be replaced often, ball joints w/o zerks, u-joints w/o zerks, factory shocks vs bilstein or edlebrock, factory limited slip diff, cheap wears off too soon frame coating, rust through in a month header studs, cast headers, conti tires, you can't tell me that engineers did not warp the pre-march of 1999 rotors when proving out the trucks back then so why did Ford put them on the trucks $$$.
So it's reasonable to argue the Granatelli coils can be better than the factory coils. If you would like to let the performance of your "work truck" just continue to decline "just leave things alone and drive the vehicles".
Or if you like to use the power of the V-10 and try to improve it - so let people do that.
No reason to knock people that try to improve on Ford's design.
So it's reasonable to argue the Granatelli coils can be better than the factory coils. If you would like to let the performance of your "work truck" just continue to decline "just leave things alone and drive the vehicles".
Or if you like to use the power of the V-10 and try to improve it - so let people do that.
No reason to knock people that try to improve on Ford's design.
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From: Tax Happy Hanover Pa
A quick look at Granatelli's website shows two testimonials from guys w/ supercharged cars. The dyno graphs that they provide are supercharged engines. I'll quote from their website, " Add's up to 15hp (normally aspirated) and 35hp (s/c,turbo,nitrous)" Like Art said, this would make sense on a supercharged engine. I'd be willing to bet that on an engine in a good state of tune, you'd see very little increase and if you did, it would be at such a high rpm that it would prove useless in everyday driving. But hey, aftermarket parts and a lighter wallet are always better, right?????? 
FTE Leadership Emeritus
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From: Long Island USA
Originally Posted by mizzitch
Once people realize that OEM is normally junk then we can get somewhere with this topic.
I refuse to buy anything branded Motorcraft unless I have to (except plugs).
Stock paper filter is junk? Well, yeah, they are a maintenance item, and need to be replaced at regular intervals, eh? Ask Fredvon4 if they are a performance-killing item though
I think he'd disagree.But shelling out $'s for 10 new coils when the old ones are still working fine?
Foolishness.
Do an emissions check. If your CO is high, find out why. That's the biggest determining factor for "tune" ... CO. If the CO is very very low, any ignition upgrades are not going to do much.
Now, that performance increase from the coils. How many miles on the vehicles/plugs when they did it? Did they do a before and after on the original vs. new plugs? Did they put in new plugs at the time of the coil upgrade?
Just curious.
Elder User
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In the mustang mag they left the plugs alone. They checked old vs granat. coils on one dyno, then check old sv granat. on another dyno both times the granatelli coils and boots produced more power. The wire in the coil boot has a lot lower resistance than factory. I am in the process of learning what I need to do to make serious power out of the V-10. I would like to see an est. 1000 hp at the crank based on rwhp, but I need a certain amount of reliability.
Post Fiend
Joined: Jan 2002
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From: USA
"No reason to knock people that try to improve Fords design"
Yes there is ,because they are the first people to jump all over Ford and complain when their truck falls apart after installing these aftermarket junk gimic's.
A air filter is a maitenance item,as for the other items you mentioned these are a result of the society we live in a throw away ,don't maintain buy new !!!!!!!
A result of fords bean counters $$$$$$$
Things do have a life span also though!
Art sorry you feel that way about MC
I've never had a problem with its quality
The performance of my vehicles has never declined .all because of proper maitenance and quality replacement parts being used.
And not using the vehicle for something other than its intended purpose.
Have fun its your $
Rich
Yes there is ,because they are the first people to jump all over Ford and complain when their truck falls apart after installing these aftermarket junk gimic's.
A air filter is a maitenance item,as for the other items you mentioned these are a result of the society we live in a throw away ,don't maintain buy new !!!!!!!
A result of fords bean counters $$$$$$$
Things do have a life span also though!
Art sorry you feel that way about MC
I've never had a problem with its quality
The performance of my vehicles has never declined .all because of proper maitenance and quality replacement parts being used.
And not using the vehicle for something other than its intended purpose.
Have fun its your $
Rich
Last edited by FortyFords; Aug 29, 2006 at 03:20 PM.
Fleet Mechanic
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I was just looking through threads on another site, and the guy who dyno tuned my Mustang has tried some of GMS coils on a couple of occasions and gave his personal dyno results. On a blown 05 GT he got pretty close to 25hp with most of the gain over 5000rpm, but a some under the curve. The coils leaned the A/F out .2, so he added fuel to get the A/F back and it settled at about 17hp peak gain. He did not have another set of plugs to experiment with opening the gap.
On an 06 Mustang GT naturally aspirated, the results were about what I would expect...1.5hp and 1.5 tq gain. The change was made over the course of 7 pulls, the car was up to temp and it was giving consistent numbers. Again, stock plugs and gap, just swapping coils.
On an 06 Mustang GT naturally aspirated, the results were about what I would expect...1.5hp and 1.5 tq gain. The change was made over the course of 7 pulls, the car was up to temp and it was giving consistent numbers. Again, stock plugs and gap, just swapping coils.