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Installed Magnaflow 12580

1422 Views 6 Replies 4 Participants Last post by  smj999smj
The dreaded Y piece has been removed and the Magnaflow has been installed. If you are near Colorado Springs, The Muffler shop on 2115 E St Vrain does quality work. Here's a quick photo I took after it was done.
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They tend to sound better when you get somewhere around 500-1000 miles on them. I got the 12580 on my 06 Pathfinder with DT shorty headers and DT mid-pipes (eliminates the rear converters) and kept the stock tailpipe and post-muffler. I definitely notice a drone during light to mid-throttle acceleration, but idle it sounds good and at wide open throttle, she sounds great! That said, I didn't notice any real gain in gas mileage nor performance with just the exhaust mods. I later added the XTP plenum spacer, aFe Momentum intake system and reprogrammed with a Superchips tuner to the 93 Octane performance tune. The biggest "noticeable" increases in performance came with XTP plenum spacer and the Superchips tuner.
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