ZR-1 Net Registry Forums - View Single Post - Headers , Exhaust and emisions in Colorado

XfireZ51 · 05-19-2014

Actually grey is not a problem. It has to do w the ethanol,and additives in the gas. If ur expecting light tan, that's not necessarily the case any longer. To truly judge u should do a "plug cut" removing the threaded portion of the plug and looking at color. My plugs are not tan.

05-19-2014	#10
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,685	Re: Headers , Exhaust and emisions in Colorado Actually grey is not a problem. It has to do w the ethanol,and additives in the gas. If ur expecting light tan, that's not necessarily the case any longer. To truly judge u should do a "plug cut" removing the threaded portion of the plug and looking at color. My plugs are not tan.