well, i placed one up in the fiero once and noticed that it was a little to long. I figured it would be difficult to get the angeled piping to curve coming out of the muffler and then to the tips. I thought if the stock muffler is 12" in length why not shorten the flowmwster muffler to 12" in length? By doing so I'll be able to get better exhaust flow with mandrel 2.5" tubing... I was able to cut one today, I took some pic's of the before I welded, but once it was finished the battery died in my camera. I'll have some pic's tomorrow when i go into work.
this first pic. is the muffler cut into three..
this second pic. is a view of the inside.
this third one is with the outer in place
the last two pic's is the final product, you can see by the last pic. the 4" piece removed.
I should have the picture tomorrow of the two parts welded together. Sorry my camera ram out of batter power.
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Posts: 3979 From: Livermore, ME Registered: Aug 2007
This photo illustrates how my Flow Master was modified to be package in basically stock position, without any changes to the trunk sheet metal. Also there is enough room between muffler and wall of trunk to place a thin flat 1/4 in stepped stainless steel "pocket", to hold a 16 in x 8 x 1/4 in thick heat shield material (fiber with one side alum face). You just screw the metal narrow pocket to the trunk wall and drop the pad inside from the top. This was done on my 88 GT, fits nicely between crade and trunk. The inlet was modified to 3 in. and the 2 1/2 in. outlets were fabricated to exit to stock trumpets location. The mandrel bends on both sides have a good even radius, believe it is a series 80, but not positive.
This Is To The T What i Did ..I Took A little Less Off The Muffler Though .. Pic Taken With Cell Camera .. ..i Dont Know Why I Dont Carry My Digital Around With Me !!
You Can Kinda See The Muffler ..Sounds Alot Lower lol If That Makes Sense ...Guy At The Shop Said He Never Heard A Fiero Sound Like That .. I Also Had A New Pipe Put In ..2.5 Inch Pipe From The Y Pipe Down...
I Will Getting Getting A Custom Made Y Pipe As Well.. When I Finally Get Around To Getting My Headers Coated ..
EDIT: The Reason i Was Back At The Shop Was To Get The Tip Fixed lol ..Im Sure You Will All Notice
------------------ "This car is so good looking its almost indecent. - AutoWeek on the new 1986 GT"
[This message has been edited by ZeroC (edited 08-20-2008).]
Posts: 1779 From: Mansfield, Mass Registered: Mar 2007
I have a flow master 80 on my gt. The only thing we modified was the inlets and outlets we cut them back for a better curve going out to the tips. It sits up in the stock position without a problem. Its not even visible unless you stick you head under the car. It sounds really deep and not very 2.8 like at all. I've had at least 2 people yell light it up at me when going through a parking lot.
Posts: 7979 From: baltimore, md Registered: May 2008