Question for the tuned heads
Thread Starter
Junior Member
Joined: Apr 2017
Posts: 43
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GL 450
Question for the tuned heads
What's up people. There's been a lot of great talk and information about several ecu upgrade options for the 450. For those of you who are tuned or have an understanding of the process, did you change out your spark plugs with a particular brand? When I upgraded my Audi, everyone said the best plugs to run were ngk. Obviously, this is a much different vehicle but was curious on everyone's thoughts were regarding that.
Thanks in advance
Thanks in advance
Thread Starter
Junior Member
Joined: Apr 2017
Posts: 43
Likes: 0
GL 450
I heard mixed reviews about the K&N because of the oil the filter requires and how it can potentially detrimental to the intake environment. How long have you had yours installed? Does it make any difference?
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Joined: Jan 2015
Posts: 152
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From: Illinois
2013 GL550 4Matic
