I built a custom dual exhaust. I have a header from Clifford InLine 6 Performance (I think it is the same as the old Nissan Comp header from the 70's) 3 into 2 configuration. Dual 2" pipes with two 4" round Magnaflow stainless mufflers in the drive shaft tunnel, and 2 small oval Magnaflow mufflers in the back (stacked), finished with dual stainless 2 1/4" tips. It looks really nice, and is actually not loud. The problem is it doesn't sound very good. It flows very good though. Previously I had the same header, with dual 1 3/4" pipes and nothing in the tunnel with 2 small and 2 large glasspacks (1 for each pipe) in the back, finished with Ansa type exhaust tips. This used to sound very good, but over the years, it seemed to get louder, to the point where it was too loud. It was also quite restrictive as evidence by an inability to hit 6000 RPM in 4th gear with this exhaust vs. the one I mentioned above. Anyway, I'm very interested to hear what others have. Also, if any of you can make a sound file of what you have for us to listen to, that would be awesome! Garrett
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Thanks for the clip! About 10 years ago, I did the same thing as your friend with my Datsun 510. I ran a 2 liter L-20B motor with a header and 2 1/2" exhaust all the way back with a single turbo muffler. My girlfriend and I both used ear plugs for long trips, but most of the time I drove without them. I definitely lost some hearing because of this. My ears ring all of the time- though it has gotten less noticeable over the years. I encourage you to tell your friend about this. Losing hearing is not fun. G