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| 12-17-2013, 10:31 PM | #1 |
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Private First Class
 
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FS: Challenge X-pipe street version with OEM cats
I returning my car to stock for resale. X-Pipe is in good condition and sound amazing! The oem stock cats are welded onto the x-pipe, which means that you don't need to cut your stock pipes! This will benefit to someone that wants to go back to there stock x-pipe sometime later. This will fit both the E90 and E92 M3 fitment is perfect. Will ship but priority for Norcal guys that want to pick these up from CA. Sacramento for $700.   Last edited by beam3er; 12-18-2013 at 06:42 PM.. |
| 12-18-2013, 07:56 AM | #2 |
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Private
 
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What kind of gains did you see with the stock primary cats in place with the Challenge x-pipe? Haven't seen this combo much. Wondering why you did it this way? What rear section were you running?
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| 12-18-2013, 09:22 AM | #3 |
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I know a thing or 2 about a thing or 2...
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Drives: E36 M3 Coupe, e39 M5, i3s
Join Date: Oct 2008
Location: LI, NY
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Ditto. Everything I've read states that the primary cat delete gives you the most gains.
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2019 Imperial Blue Metallic i3s BEV
2003 Le Mans Blue e39 M5 Dinan S1 1997 Alpine White e36 M3 (the old gal) 2013 Mineral White e92 M3 (sold  )2014 Carbon Black 650i M-sport (sold) |
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| 12-18-2013, 11:15 AM | #4 |
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Lieutenant
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Guys it's because the Street version is made to be installed after your primary cats so you don't have a check engine light and you also don't need a tune. I believe all their other versions (sport, race, race plus) delete the primary cats and you need a tune. Performance is not as good as if you removed your primary cats for sure.
I sent pm pretty quickly when I saw this and will paypal soon. lol Last edited by visor325i; 12-18-2013 at 11:22 AM.. |
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