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Old 07-28-2003, 01:09 PM
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Question Performance spark plugs for 98 mustang gt

Hey

Can anyone give me a recommendation on spark plugs for a 98 mustang.

1) Well this give me any performance increase by replacing the stock spark plugs.

Thanks for your help

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Old 07-28-2003, 03:20 PM
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I have very good luck using Bosch Plus 4 in my Vette for 2 years now without a problem. They also have a good warrenty.
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Old 07-28-2003, 06:49 PM
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I worked at a Ford dealer for a short time. We had several cars come in with Bosch plugs in them. They were runnung real bad. After replacing the plugs they ran like new. I was told that they do not work in the newer Fords. Someone in the area was using them on the tune-ups to make extra money. Made us some too.
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Old 07-28-2003, 06:57 PM
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I wouldn't put anything in except Motorcraft plugs. Also make sure they're the right type (copper, single platinum, double platinum). I have also seen late model Fords run like garbage with incorrect plugs in them. I know it may make no sense but I've seen single platinum plugs cause a car to missfire when double platinums should have been installed.

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Old 07-28-2003, 07:19 PM
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Guess I should stick to Chebys, not up to date on Fords. I have used the double platinums for a try they are a good plug to use and a little cheaper, but my car likes the Plus 4s.
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Old 07-28-2003, 07:47 PM
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this one time, at band camp,........

Quote:
Originally posted by dmorris1200
I have also seen late model Fords run like garbage with incorrect plugs in them. I know it may make no sense
my dad had an intrepid, took it to a local shop, (firestone) for a tune up, car ran like *****. long story short, wrong plugs, wrong plug wires.... his new ls, same story, only worse....
it does make a difference on newer cars.....
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Old 07-29-2003, 08:00 PM
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THe best plugs for that car are the ones that came with it off the line. THe platinums run like crap because they are too hot a plug and the computer can't compensate. Besides, plugs will do little more than make you feel good without improvents in the ignition system. After all, you can't make a bulb brighter without giving it more juice.
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Old 07-29-2003, 08:43 PM
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Quote:
Originally posted by crazy larry
this one time, at band camp,........
CLASSIC!

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Old 07-29-2003, 10:10 PM
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I just purchased my first set of Plus 4's for the SHO since the available alternatives didn't light my fire.

I'm willing to give them a try from the good experience I had running a four prong plug in my old RX7, you want to talk about a picky car for plugs! Single platinums would hardly start the car, and surface gaps choked on rich mixtures. The double prongs were OK but only really worked well on the trailing plugs not the leading.

Well see how they work.
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Old 07-31-2003, 08:01 AM
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Thanks for the Info

Thanks for taking the time to answer my question.

Lot of valuable info
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Old 08-11-2003, 01:21 AM
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Use proper motorcraft plugs, set to factory specs, and dont drop them when installing. It could crack the porcelin and close the gap (that goes for any spark plug). Look to other areas to get more performance.
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Old 08-14-2003, 01:00 PM
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You may want to look at these Halo plugs? They are in Arkansas
I dont know anyone thats used them but they got a heck of a web site with some interesting info.
check it out..Has anyone out there used these Halo plugs?
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