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      11-20-2012, 01:00 PM   #12
ilikebmxbikes's Avatar
Drives: '08 135i
Join Date: Apr 2011
Location: San Francisco

Posts: 2,775
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Originally Posted by Dackelone View Post
Why even bother to take your car in? Why not just change or pay for an oil change. Why risk a dealer visit? I would just change the oil myself.

The technicians will know in about 1 second if your car is catless just by starting it up... they have ears and noses and a lot of experience. Just because it doesn't throw a code or a CEL doesn't hide the fact that your car is louder and puts out a gas smell.

That being said, if you are just going for an Oil change and no warranty work is required, they may not care. My dealer was cool with my intercooler, mid pipes and charge pipe for all services before I had to get a low pressure fuel pump sensor changed. The sensor has zero to do with the mods, but he wanted them off before he could do the work.
MY Build Log
08 AW 135i | Cobb | ETS FMIC | ER CP w/ Tial Bov | AR Catted Downpipes | Berk Mids | Meisterschaft GT SUS 1M |M3 Control Arms | M3 Sways | M3 Rear Subframe Bushings | Wavetrac LSD | AST 4200 DA Coilovers | HRE R43 | Hankook R-S3 |Full BMW Performance Interior | Revozport 1M Raze Aero Package in Satin Carbon |1M Body Conversion|
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