Hello, my name is Duane. I have been reading the forums for some time now but i have just now quit being a idiot and registered. I am looking forward to bringing my 1998 silver GS to the next level, with all the things i have and will learn here. specs on the GS are: no mods, a rebuilt motor with 1500 miles, and a whole in the front of the flex pipe. The only CEL is the downstream o2 sensor but i figure it is due to the whole... Thanks, Duane