Registered Forum User
GTL
Posts: 453
Join Date: Jun 2001
Location: Aberdeen Scotland
Mood: going for a ride...
Don't use a bolt , the "plug" for the C02 sensor point is only the same depth as the boss it screws into , a bolt will protrude into the flow of the exhaust.
Get some "easit" or penetrating oil on the plug in the standard pipe for a while and then try removing it again , or go to your dealer and buy a new plug for your de-catted pipe.