This is what the plugs looked like when I popped them out. I pulled all 8 (some on the passenger side are a mutha-%#$). I cleaned them off with a brass brush on a dremmel thinking it may have just been a carbon build up problem causing poor detonation. I am currently also pushing through a tank of gas with a bottle of Techron in it.
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Saving for: 2019 ZL1 convertible.....
SOLD:2016 2SS Red Hot Convertible with black metallic rally stripes
SOLD:2011 Silver Ice Metallic 1SS/RS Convertible. Completed modifications: installed factory HUD, deleted AFM/DOD, Dynatech LT coated headers with high flow cats, Solo Cat back exhaust, CAI inc. intake, Vmax ported TB, SIM quarter flares/splash guards, steering wheel radio controls, PDIM iPod interface in center console, RX catch can, JRE cold air scoop, windshield washer bottle relocation.
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