SR20 exhaust setup. Professional opinions (maybe some people's .02¢) welcomed. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mr.nismo. · 03-06-2018, 11:16 PM

Hey everyone. Just looking for opinions on a setup I'm thinking of. Prev setup was full three inch all the way through. Mil spec 100 cell cat> vibrant ultra quiet resonator > tanabe super medallion catback. The car was pretty loud and I always had the silencer in (dd). I definitely noticed a restriction when having it in, and I would like to keep it out this time.

For a new setup, I'd have the mil spec cat moved up (maybe 8 inches ahead of oem cat location) > 200 cell high flow magnaflow cat (in oem location) > y-pipe into a dual inlet single outlet magnaflow straight through 5x8 oval muffler in oem pre axle muffler Location > tanabe muffler. I feel (please someone correct me if I'm wrong) that having the dual inlet muffler going back to single will force some sound to be absorbed into the packing in it and still stay straight through. I'd like to have the magnaflow cat to help more with the smell, but still be able to quickly swap it for track days for a test pipe. Again I'm not a sound engineer or anything, so I could be totally wrong in my theory. I've read up on some exhaust loops (once that re-enter the stream and others that stop) but nothing SR specific nor about going y pipe into the muffler and back to single. I'd love to hear some insight and maybe someones own experience. Thanks in advance!

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03-06-2018, 11:16 PM	#1
mr.nismo. Nissanaholic! Join Date: Feb 2012 Location: Oxnard, CA Age: 30 Posts: 1,890 Trader Rating: (31) Feedback Score: 31 reviews	SR20 exhaust setup. Professional opinions (maybe some people's .02¢) welcomed. Hey everyone. Just looking for opinions on a setup I'm thinking of. Prev setup was full three inch all the way through. Mil spec 100 cell cat> vibrant ultra quiet resonator > tanabe super medallion catback. The car was pretty loud and I always had the silencer in (dd). I definitely noticed a restriction when having it in, and I would like to keep it out this time. For a new setup, I'd have the mil spec cat moved up (maybe 8 inches ahead of oem cat location) > 200 cell high flow magnaflow cat (in oem location) > y-pipe into a dual inlet single outlet magnaflow straight through 5x8 oval muffler in oem pre axle muffler Location > tanabe muffler. I feel (please someone correct me if I'm wrong) that having the dual inlet muffler going back to single will force some sound to be absorbed into the packing in it and still stay straight through. I'd like to have the magnaflow cat to help more with the smell, but still be able to quickly swap it for track days for a test pipe. Again I'm not a sound engineer or anything, so I could be totally wrong in my theory. I've read up on some exhaust loops (once that re-enter the stream and others that stop) but nothing SR specific nor about going y pipe into the muffler and back to single. I'd love to hear some insight and maybe someones own experience. Thanks in advance! Sent from my SM-G955U using Tapatalk Last edited by mr.nismo.; 03-07-2018 at 01:38 AM..