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Old 09-07-2012, 05:57 AM   #3 (permalink)
hansj3
EcoModding Lurker
 
Join Date: May 2009
Location: inver grove heights
Posts: 35

jeep - '96 jeep grand cherokee limited
90 day: 20.06 mpg (US)
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But how about on the vehicles with computer controlled timing and fuel? The way I see it It's not going to benefit from the colder plug. with a hotter plug, you get a faster flame front, a more complete burn, and hopefully the ecm will learn and lean the mixture. At the very least you should net a little bit more power, and have to use less throttle to compensate
Or my ideas completely off base?
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