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      05-20-2011, 11:00 AM   #21

Drives: 328i, 335i, M3, 535i, X5, 36M
Join Date: Oct 2010
Location: OC

iTrader: (3)

Garage List
2014 Ford Raptor  [0.00]
2012 328i E92  [5.00]
2013 X5  [0.00]
2013 335i F30  [4.00]
1990 Toyota Previa  [0.00]
1997 E36 M3  [5.00]
2011 E92 M3  [0.00]
2011 535i  [0.00]

Why does the other challenge X pipe cause NO CEL? i know the other model has high flow cats but doesnt the Akra evo also have hFC? but the evo throws a cel. so why is it that the challenge one doesnt throw a cel but akra evo does? i thought all xpipes that are non oem cause CEL...forgive my ignorance..trying to figure this out to make a just worried about getting the CEL deleter and then not knowing if its deleting other important warnings non related to emissions...and then ill be driving around not knowing if something is wrong

Also, whats the difference in sound between the other challenge pipe vs this one here?