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Discussion Starter · #1 ·
what's the difference between PFR6G-11 and PFR5G-11? PFR5G-11 is for normal driving condition and PFR6G-11 is for harder driving. SO what's the draw back/advantage of having a PFR6G-11 over the PFR5G-11? I have a couple of mods so should I go with PFR6G-11? look at my sig for the mods I have and let me know which plugs should i get.
 

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88 sleeper
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the higher the number the colder the plug

i'd check your plugs...if they show signs that they are running hot. get the colder plug. If they show normal wear, just stay with the stock heatrange.
 

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Discussion Starter · #4 ·
yah those are the ones that I have an eye on. I'm using the NGK copper that everyone's been recommending but those are only good for like 10-15k. I've had them for about 4k now. The ones on ebay sounds legit to me
 

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stick with stock "normal" heat range.
 

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*r**h *eller
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Copper plugs will always give the best spark as it is a better conductor than platnium or iridium. The down side is short life. Platnium and iridium plugs will give good performance with a long life. With the G2 ignition system being as good as it is, you don't really need copper plugs until your doing some serious shots of NOX or forced induction.
 
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