Ngk tr55
Thread Starter
Teching In
Joined: Feb 2017
Posts: 11
Likes: 0
From: Phoenix, Az
Ngk tr55 Have my 5.3 stock no mods yet, but its time for a tune up. Was wondering if its ok to run the NGK TR55 plugs or the TR6s. Also what would be the performance/drive difference in vehicle. Any info is appreciated Thanks