Dual exhaust conversion?
#2
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See www.fabspeed.com, no affiliation. I have there dual exaust on my 90 C2 and love the sound and lost weight.
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You might want to consider installing a complete '95 993 exhaust system on your car. Everything will fit. Yes, you have to make a new oil line, and deal with the heat ducts, but in the end it's a nice system. The improved throttle response made it worth it when I did years ago. There are a few companies that offer the fiberglass bumper end. I did it the hard way and made a mold from a turbo end cap.
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Originally Posted by zicoramone
I had mine cut (no new left rear valance)
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Originally Posted by jeff522
Did you trim both sides,or where you able to match the left to the right side.At any rate it looks very nice.
Fabspeed shows a video of the steps on cutting the second outlet for Dual outlet.
http://www.fabspeed.com/911T-930%20D...Cut%20info.wmv
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Here is a photo of a Fabspeed installed on my 90 C2. The only issue I have is that the muffler does not have a good perch with which to rest on the factroy mount? I called them and they said that this is the way it is. I love the sound and looks...added clamps and bent things around to make it rattle less. The original owner added this and he was not mechanical at all. If I had bought it I would have sent it back for a better mounting system and if not one, would have probably kept it anyway because the sound is so nice! My bumper was cut out for the left side.
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![](http://forums.rennlist.com/upload/rs_993_exhaust_1.jpg)
![](http://forums.rennlist.com/upload/rs_993_exhaust_4.jpg)
![](http://forums.rennlist.com/upload/rs_993_exhaust_6.jpg)
![](http://forums.rennlist.com/upload/scan0001.jpg)
![](http://forums.rennlist.com/upload/scan0002_copy2.jpg)
![](http://forums.rennlist.com/upload/scan0003_copy1.jpg)
Here are a few pictures of the car and install.
I used all factory parts and modified the oil lines to work with this conversion.
You can also see the molds that I had to make (I hate fiberglass)
#14
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Looks great with dual exhaust. However, did you noticed any increase in horsepower or torque with the dual exhaust? I'm curious if anyone checked the horsepower with a dynometer after the conversion. I know the preenvironmenally friendly GM engines definitly pick up 10 horsepower or more with a dual conversion. I understand there are various single sport mufflers that give out few more horses for a lot less than the dual conversion.
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If you look at the merge of the left and right side, it is a "X" which will maximize torque and give you better exhaust scavenging. I never dyno'd this setup but my butt dyno felt it.. I'd guess 15HP..