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      07-09-2018, 02:51 AM   #529
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I'm supercharged and change my plugs every 7500 miles. Here is the most important thing I learned.

Every coil plug takes slightly different amount of force to remove. Find the two easiest ones and put those in the back so it's easier next time around.
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      08-23-2018, 09:00 AM   #530
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Just did the job and it took me a pretty casual 3 hours. I was working pretty slowly and cleaning at the same time. No special tools, just lots of swivel sockets and ujoints. The most annoying part for me was honestly trying to put the airbox back together. Mine just never seems to fit right.

I started it up before putting everything back together and was amazed at how much smoother it felt/sounded. Definitely not waiting as long next time.
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      08-27-2018, 05:56 AM   #531
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I just did mine after it threw an error code. I was getting a lot of pre-ignition explosion, and especially in high gear (6th) and lower speeds, car was undriveable. I changed the first lot of spark plugs at 37k km (2013) and this at 82km. There was a lot for carbon build up and the 2nd cylinder which threw the error code and forced the car into limp mode was pretty bad with terminal touching. I also had the 6th one bad too but not registering error codes. I hated driving the car.

Since the change it has been like new with smooth acceleration and just singing. Like the other OP said, not going to wait for this long to change. It took me about four hours for the job without removing the airbox. Getting the ones close to the firewall was time consuming and frustrating. Anyway, it's done for now!
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      09-22-2018, 11:53 AM   #532
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Did this for the first time yesterday @38k. Wasn't as bad as I thought, took me a little under under 2 hours all said and done without taking off the cowl or the plenum. What helped the most was having a variety of different size extensions, a spark plug socket with a swivel attached, and one more swivel socket.

I also had the division M coil puller - worth every penny IMO.
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      09-24-2018, 01:22 PM   #533
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Did mine over the weekend...everything went fine except I got distracted when I walked away from removing the pass. side closest to cabin. Instead I went after the one I previously did next to it and somehow broke the coil plug! Dohhh
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      09-30-2018, 12:11 AM   #534
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Anyone else notice that about a thousand miles after new spark plugs, the smoothness at idle for a cold start isn't quite there anymore? It's still better than before but not as good as brand new plugs.

My plan is to make spark plugs a yearly maintenance item done after the car is out of winter storage and ready for daily duties.
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