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either will work, 1 step colder is fine, two steps colder is fine, the difference in the power is minimal...
spark plugs disperse heat out of the combustion chamber and into the heads. that is one of their two jobs, colder plugs pull more heat out so it is safer levels of heat in the combustion chamber. its all pretty simple once you understand what they do....
you will lose just a bit of power NA but it wont even be noticable, less than 1%
Last edited by Audible Mayhem; 08-21-2006 at 01:57 PM.
Just an update for future searches - This is a good site for NGK spark plugs - http://www.ngk.com/default.asp - I used this site to order a set of colder plugs - LFR6AIX-11- also if you use coupon code - Dodgetalk - you get an additional 10% off. I found the code online so don't ask.
Last edited by tenpenniesz; 09-21-2006 at 06:45 AM.
I agree with Jeremy. I use LFR 6A-11, they are like $30-$35 for all 6 and they work great. 97supratt plugs will work too, like eveyrone said. So if he will give you a good deal, might as well get those, they are probably already gapped correctly too.
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