Hey all,

I've had a problem for quite a while, the car would run really well sometimes, and bad others........As far as i could work out, it was temperature related, until the other day....

I had my rear muffler replaced with a straight through pipe (it is A LOT cheaper)...Guess what? The car runs well the whole time now, and the fuel mixture is nearly spot on all the time (i've installed an LED in the dash from the computers mixture signal, flashes continuously when the mixture is right....) After i picked up my rear muffler (it is EXTREMELY heavy for a metal cylinder with a few pipes in it....when you drop it it sounds very solid)...when i looked inside the muffler, there is a fair bit of carbon in it....a large amount actually....which got me thinking....Cold damp mornings would lead to the carbon being very "cloggy", until the muffler got hot enough to burn off the moisture....I haven't cut my muffler open to see inside, to test my theory (i am gonna keep it, in case the cops in australia don't like the exhaust!!)...but straight after i left the car place (midas), the car was revving A LOT4smoother.....My rear muffler was the original one from 1988, so i imagine, large amounts of carbon build up is highly possible....But just from the weight of the muffler, i'd say there was a fair bit in there!!!

Just for all your info, but the car is noticably freeer revving now that the muffler is removed and a pipe is there instead (the car sounds VERY sweet now, has the "burble" when decellerating.....very nice sounding when you hit about 5k rpms.....hhhhhhrrrrrrmmmmmm.....

See ya all

Aaron