Generally done as preventive maintenance every 80-100k.
If you're getting misfires, that's a common sign of bad plug.
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Yep That's all that was around when I was growing up. I remember when the Platinums came out. We thought it was so cool that there was a spark plug that would last 100k... back then we were crazy kids driving everywhere so it seemed like we were changing plugs all the time.
I'm not making that much HP so I don't think it would really make a difference. I think I would invest in a new set of coils first...
Do our cars have any airconditioning sent to the trunk? I've been surprised at how moderate the temps stayed back there this summer.
They're there. I have lost my cellphone in there temporarily.
I guess you're right. And here's a mod for that!
http://uploads.tapatalk-cdn.com/2016...9977858720.jpg
Sent from my iPhone with TaT.