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      09-13-2012, 10:50 PM   #1
blumango
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Drives: BMW 130i Coupe
Join Date: Oct 2010
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AR Catless DP No Check Lights on Stock Car!

Hi,

This is weird. I have been running on an AR catless DP for over 2 months now on my BMW N55 E92 without any check engine light issues for 1 month without a tune or O2 spacer and 1 month with a tuning box without DP fix or O2 sensor....I know DME will retard power if they detect something is not right with the O2 sensor, which usually occurs with catless DPs....in this case, should I still be concerned? Should I still buy the DP fix anyway?