1992LexusOwner Posted November 14, 2008 Share Posted November 14, 2008 I have 1992 SC400. have several questions about upgrading the exhaust. The only thing I have done so far is knock out the current stock cats, the 2 in the front. It gave it a more throaty sound, not too bad, in my opinion. Could tell a little more top end power. My questions are.... 1. Should I remove the other cat in the middle? Why? 2. What brand of exhaust should I get? and why? Looking at Magnaflow? 3. What about a 10" inch x pipe behind the front converters? 4. Should I custom build a system form the cats back that works better? 5. Looking for something silent or quiet at idle, but sounds good when I step on it. Any thoughts or opinions would be great. Please be specific in replies, please... Looking at doing something in the next 2 weeks. Quote Link to comment Share on other sites More sharing options...
1992LexusOwner Posted November 18, 2008 Author Share Posted November 18, 2008 I cant believe 35 people have looked at this, and no feedback... Has anyone ever modified their exhaust? Quote Link to comment Share on other sites More sharing options...
UCF3 Posted November 18, 2008 Share Posted November 18, 2008 I guess I'm 36.. Magnaflow is okay. It's your preference that counts. opt for a High-Flow Cat if you want to stay legal. It also depends on where you live in AL. They may not enforce the Cat rule. You only need 2.5-3.0" piping. Custom piping is recommended, and the more straight you can keep the piping the less restrictive your exhaust will be. A catless exhaust is going to be rather loud and you may get some flames. Quote Link to comment Share on other sites More sharing options...
92BlueByU Posted November 23, 2008 Share Posted November 23, 2008 I have the same year as you, I recently had a shop clean out the stock cats, remove the muffler in the middle and install 2 excellerator mufflers (I ran them on my Prerunner years ago and they made me happy) It sounds good at idle, nice and deep, as I acclerate it quiets down a little and then if I get on it, it really opens up and gets loud. Quote Link to comment Share on other sites More sharing options...
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