Hi Jeremy Kinney Please define: EGT, TIA. -Cosmo Kramer Message: 1 Date: Wed, 6 Apr 2011 18:13:22 -0700 (PDT) From: Jeremy Kinney <triumphsearch at yahoo.com> Subject: Re: [TR] TR4A Dual Exhaust Question Thanks to Jerry,... I'll look into EGT, but I think this is exhaust staining for lack of a better phrase more than anything. Best, Jeremy