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Old 04-08-2016, 05:20 PM   #1
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Granatelli COP's?

Anyone used or heard of Granatelli coils for your ignition? I've used MSD on a bunch of vehicles in the past and swear by them but they've only ever been used on NA engines. My 99 Cobra has a Vortech V-2 supercharger and I'm looking to swap plugs to the NGK TR6 plugs and I'd like to upgrade the coils as well. I know there are many purists out there who are going to start talking about staying with Motocraft and I shouldn't have problems and all that, but I'd really like anyone's opinions, advice, or knowledge on these coils. I believe I heard Accel is just a creation of MSD for the "appearance" of competition but I don't know anything for certain and only just recently came across Granatelli. Specifically I was looking at the Granatelli GMS 4V Pro-Series coils. Any help and experience would be appreciated before I drop the money. Thanks!!
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Old 04-08-2016, 05:25 PM   #2
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Granatelli = absolute garbage

Stick to OEM.
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Old 04-08-2016, 05:39 PM   #3
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Quote:
Originally Posted by Soccerluvr4 View Post
Granatelli = absolute garbage

Stick to OEM.
See? I just said there would be those who will say stick with stock. I don't want to hear that. Stock coils on a 99 cobra were meant for the engine being NA. Mine is not NA anymore and therefore I'm looking for more from my coils. I get that reducing spark plug gap is an alternative, but I'd rather have the coils too. So if anyone is going to say "OEM" or "motocraft" or whatever, don't bother commenting, I'm not looking for the "stay stock" advice. Thanks.
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Old 04-08-2016, 05:42 PM   #4
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There are PLENTY of guys that make over 1,000 horsepower running OEM coils..... Use OEM coils. They literally are the best ones for the car. All others are a step in the opposite direction.
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Old 04-08-2016, 05:54 PM   #5
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Granatelli COP's?

Maybe "everyone" says that because it's there is truth behind it.

But since you want to hear something else, you should def but these. I bet they will deliver the promised 20+hp 😀👍🏻
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Old 04-08-2016, 06:06 PM   #6
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Only reason to stick with motorcraft is because they will last a lot longer , and in the long run save more money.

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Old 04-08-2016, 06:11 PM   #7
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Only reason to stick with motorcraft is because they will last a lot longer , and in the long run save more money.

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Only reason to go with anything except Motorcraft is if all of yours go bad and you cannot find any other Motorcraft ones. It has been proven time and time again that they are the best ones.
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Old 04-08-2016, 06:12 PM   #8
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As far as why granatelli are garbage. They are a rip off company. Look up the documentation of their copies of Maximum Motorsports suspension parts.
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Old 04-08-2016, 06:19 PM   #9
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Alright I appreciate the info. I wasn't looking for "hp gain" with coils though. I was concerned with dwell time and discharge capacity and such. I agree stock is great but since stock on a 99 cobra is an NA engine and mine is supercharged, I was worried about misfires and what not from the coils not being able to handle the higher combustion chamber pressures and faster moving air. I get that there is a lot of people saying stay stock, but I also realize that 90% of people copy and repeat what they read or hear so I was kind of hoping to come across someone with first hand experience, not saying the above is you though. My next question, do coils from the 03/04 coils work in a 99 cobra? As in, are they the same, or compatable?
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Old 04-08-2016, 06:24 PM   #10
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Originally Posted by NoStangNewb View Post
Alright I appreciate the info. I wasn't looking for "hp gain" with could though. I was concerned with dwell time and discharge capacity and such. I agree stock is great but since stock on a 99 cobra is an NA engine and mine is supercharged, I was worried about misfires and what not from the coils not being able to handle the higher combustion chamber pressures and faster moving air. I get that there is a lot of people saying stay stock, but I also realize that 90% of people copy and repeat what they read or hear so I was kind of hoping to come across someone with first hand experience, not saying the above is you though. My next question, do coils from the 03/04 coils work in a 99 cobra? As in, are they the same, or compatable?
They are not only compatible... They are the same ones.
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Old 04-08-2016, 06:47 PM   #11
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They are not only compatible... They are the same ones.
Thank you good sir.
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Old 04-09-2016, 02:25 PM   #12
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Doesnt matter what you want to hear dude. Facts are facts. Oem is best for coils and granatelli is trash.

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Old 04-09-2016, 02:43 PM   #13
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Doesnt matter what you want to hear dude. Facts are facts. Oem is best for coils and granatelli is trash.

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Excellent statement!! Now please provide proof to back these "facts"? I'm convinced to stay away from Granatelli for now, but that doesn't necessarily mean I'm just going to believe you or the internet to "stay OEM" just because "facts are facts" with no proof.. Do you have some numbers? A video perhaps? How about even some first hand experience? Come on man.. They're facts!! Right?
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Old 04-09-2016, 03:15 PM   #14
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Wow ok. I can do some linking when I get home on a pc. Or you can waste money on aftermarket coils...

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Old 04-09-2016, 03:26 PM   #15
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Wow ok. I can do some linking when I get home on a pc. Or you can waste money on aftermarket coils...

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That would be most helpful! I've never had an issue with MSD and I've used them a lot, so that's my first hand experience. However, I've not used any others which is why I'm looking for input BEFORE I spend money to R+D. As I said, I'm convinced to stay away from Granatelli for now, and I've never cared for Accel, but I was hoping for user's experience and input? Or perhaps links to proof? Vids? Numbers? Anything you can share would be appreciared!
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Old 04-09-2016, 04:19 PM   #16
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Stock coils= moderate spark and long life Aftermarket performance coils= more spark, short life Drag Racing ignition coils= good enough spark to burn nitro or all that other racing fuel, but get replaced usually after a few seasons of drag racing.

Guys if he really wants to buy them , just let him ! It's his money not ours ..
Yes he will most likely regret it later on but that's just the learning exprience he will gain , and later on he will provide the same advice you guys are telling him. That's just the beauty of it

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Old 04-09-2016, 04:29 PM   #17
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Seems every time we read about a misfire, it's either IAC or COPS, and then it seems, every time it's the COPS, it's cuz they're running aftermarket. perhaps this is why the OEM's are so damn expensive? LOLZ

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Old 04-09-2016, 04:33 PM   #18
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Stock coils= moderate spark and long life Aftermarket performance coils= more spark, short life Drag Racing ignition coils= good enough spark to burn nitro or all that other racing fuel, but get replaced usually after a few seasons of drag racing.

Guys if he really wants to buy them , just let him ! It's his money not ours ..
Yes he will most likely regret it later on but that's just the learning exprience he will gain , and later on he will provide the same advice you guys are telling him. That's just the beauty of it

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Not really as far as OEM=moderate spark. If you guys were around during the CliffyK years he actually ran a bunch of tests himself on a bunch of different COPs. None of the aftermarkets outperformed the stockers in any way and the stockers had a much lower failure rate.

Quote:
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Seems every time we read about a misfire, it's either IAC or COPS, and then it seems, every time it's the COPS, it's cuz they're running aftermarket. perhaps this is why the OEM's are so damn expensive? LOLZ

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Very rarely does the OEM electronic portion of the COP fail. Very often its the boot/spring. I have a set of OEM COPs, for example, that are original 2003 and have almost 150k on them now. I replaced the boots and springs at 120k (probably too late but w/e) and the 5.4L Expedition they are in runs like a top.
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