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spark plugs?

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Old 04-10-2013, 09:06 PM
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EvilDzl
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Default spark plugs?
Whats the best spark plug to use in my mach?
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Old 04-11-2013, 03:31 AM
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Sonic Mustang
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Originally Posted by EvilDzl
Whats the best spark plug to use in my mach?
When I had my Mach 1 tuned by Danny Swanson of Swanson Performance, he recommended NGK Stock Number 4177 TR6 (SKU 87295 04177). These are regular copper core plugs that are colder than the OEM plugs. A lot of FI guys run them and Danny recommends them for normal aspirated tuned motors, too.

I've been running them for 20,000+ miles with no complaints.
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Old 04-15-2013, 04:19 AM
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4vmach1
 
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I switch between ngk and motorcraft
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