These "Red Top" coils were SUPER easy to swap out on my 2006 Jetta GLI. With a short YouTube video review I was able to change them and the spark plugs in 10 minutes. I can't guarantee performance improvement, but they can certainly help if you're misfiring. They also look very cool. I highly recommend, especially for the price, replacing your old coils with these, especially if you still have the originals.
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