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08-25-2016, 01:21 PM
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#2
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Drives: 2019 M5 Competition
Join Date: Feb 2015
Location: Westchester County, NY
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Quote:
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Originally Posted by F22santiago
So I went JB4 (map 2) on my 228i (n20) a year ago with no issues whatsoever, love the extra power car pulls strong. A few months ago I also went with AFE catless downpipe. Love the sound and definately feel the extr torque. However, my car now "sputters" a bit when wot on higher gears (i.e: highway pulls). No faults are thrown at all and after 5k rpms or so it clears up. I noticed it seems to happen when its colder so I am assuming it has to do with a fuel and air ratio or maybe overboost (had a similar problem on my turbo saab until i got a dyno tune). So anyone here have any idea what this could be?
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Check your spark plugs
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2019 SG M5C
2015 SO M3 6MT
2015 BSM M235xi
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