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Unread 07-22-2008, 10:16 AM   #16
Zappy
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The only things that I noticed that were reset, were the radio settings. The EVIC did not appear to have been touched by the power outage.

Again, I can't be certain that the drop in efficiency I reported was due to my not disconnecting the battery before doing the plugs. All I am going by is the timing. That was the last thing that I did to the Compass before I noticed the drop in mileage. Disconnecting the battery this past Sunday may have reset something else that could have been the culprit. I'm waiting until I fill up this coming Thursday and run that tank of gas through to see what kind of mileage I get then.

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Unread 07-22-2008, 12:00 PM   #17
Argent33
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anyone upgrade their plugs from the OEM's to platinums or iridiums?

if so did you notice any performance differences? and what plugs did you go with
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Unread 07-22-2008, 12:09 PM   #18
Zappy
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I did the swap over to the Iridiums. Still waiting to see the overall effect, though initially I seem to see better fuel economy when I drive. No real difference in any power to me, but then I'm more concerned with mpg then rpm at the moment...
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Unread 07-22-2008, 01:50 PM   #19
Argent33
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Which Iridiums did you use? NGK's?

*thinks maybe he just needs to wander off to Zappy's post about changing plugs*
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Unread 07-22-2008, 07:14 PM   #20
Gramps
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Another thread on NGK Iridium plugs. http://www.jeepforum.com/forum/f98/ngk-iridium-plugs-567229/
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Unread 07-22-2008, 07:39 PM   #21
ups4
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Argent33,

I just used Autolite Double Platinums.

Everything I've read and been told is that the iridiums aren't worth the difference they afford. I can't say if this is true first hand or not....just what I've heard.

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Unread 07-23-2008, 05:20 AM   #22
Zappy
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Argent33, Yes they were the NGK Iridiums. I can't say for sure if any increase in performance is directly related to them however since at the same time I switched the plugs, I also switched the oil to full synthetic Amsoil along with changing the air filter over to a K&N lifetime filter and topped out my tire pressure in all 4 tires at 40psi. For having done all of that, I have only noticed an average of maybe 1.5 - 1.75 mpg difference compared to where I was before I did all of that. With the price of gas I know that every little bit of mileage gain helps, but I can see where maybe a less expensive plug could provide that same nominal boost so far.

Regarding radio stations after disconnecting the battery. This morning I noticed that the Sirius channels seemed to have stayed set, it was only the normal am/fm band stations that I needed to reset as well as the time.
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Unread 07-23-2008, 05:38 AM   #23
Argent33
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Hmm - I've always been a fan of the Bosch plugs (ran the Platinum +4's in my Neon) and I see they have something called Platinum Ir Fusion plugs that are supposed to be better than OEM iridium plugs. Maybe I'll try those....
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