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Which Spark Plugs Should I Run?!?

TheAce144

TheAce144

New member
Hi guys, just wondering what spark plugs I should run with my current setup (see list in my signature)...I currently have Iridium TR55 IX plugs but they are soon due. My engine studders on cold temperatures and my mileage is kind of crappy.

I heard many people saying iridium is not good with supercharged applications...is that true?

I know I don't have major mods right now but I will get headers and a 3.6" pulley at the beginning of summer. Should I go with the Autolites 104 right now or stick with the 605?

I know this subject has came up a lot on this forum but I can't seem to find a proper answer to my question....everyone seems to defend a different view...
 


I know I've already told you this...but get some AL104's and gap them at .050" when you get the pulley on.
 
iridiums and platinums wont hurt anything, they just arent the best choice when youre trying to make power.
 
ive had better luck running the iridiums over copper plugs for some reason.. i just switched from 104's that had maybe 5,000 miles on them to tr6's and the car runs better go figure
 


It's just that I'm trying to fix that rough idling I'm currently experiencing and thought the plugs would be the problem...Does it on park only, muffler tips rattling and the exhaust flow is not constant...maybe misfire....go figure lol
 
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