Are the 6EIX's the stock plugs? It just says they are the same heat range but is that what comes stock?

 

This was a very interesting post, as i just wanted to know the 'best' sparkplug......and to my conclusion after reading, there are mixed opinions. I do have one thing to add, I swapped out my stock iridiums, and tried some autolite platinums, and im getting backfire and idle problems. So these are crap. I think from what ive read, NGK copper, or BPR7EIX are what ill try today.

 

As far as the spark plugs go, if you can afford, then please use the iridium spark plugs. They are come stock with the factory. For me, I use the good old copper spark plug, becuse I also change my spark plug everytime I change my oil. And please stay the F*** away from the platinum plugs, they run too hot in FI cars.

 

This thread needs a stake through the heart, sunlight, and some garlic.