just instaaled a set of these. with the champions every now and then it would detonate funny and shake the truck, but since i installed these plugs you cant even tell the truck is running. also when i installed my throttle body the tach would jump from 500 to 700 rpm every now and then at a traffic light. now it just stay at 700 rpm. truck has only 37000 on it so i will keep people informed on how they react to gas mileage and all

 

I've read a few things about the autolite 3923 plugs. They supposably give you 4 to 5 more hp. I would be very interested in how they work for you. Especially if you see a gain in gas mileage.

 

Didn't you switch out the plugs before, and notice worse performance, idleing, and mileage?

 

yes i did. but i went with the autolite platnums not the copper ones. the plats were terrible these are a cooler plug then the stock champions. i noticed a differece right away. just the way it idles at lights and stuff.havent really notice any difference in mileage still on my first tank of gas but will keep people informed. plus with the new gears now it may be slightly lower

 

tes. the plats were bad.

 

yep i have the coppers, so cheap, yet work so well.

 

but the only downfall of the copper, warmer plugs are that they only last like 30k miles right? Thats a pain in the @$$. Or am i wrong?

 

What brand and type do they come with from Dodge? Mine has always idled a little rough when in drive, from day 1.


LB

 

these plugs are not warmer they are cooler, and i bought them at walmart 8 plugs for 10.50 cant beat that.