Quote:
Originally Posted by Dosin
I have a 2010 L99 with catback MBRP 3 inch exhaust. I tried doing some research about high flow catalytic converters. I don't know much about them and need "schooling" on them. The whole point of me wanting them is to make my car a bit louder. I don't want headers because I don't want to void the warranty. Any suggested threads for me to read? Will high flow converters make much difference on sound or is it a waste of money? Thanks for the help.
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installing headers wont void your warranty. Doing the ECM tune in order to properly adjust to ECM to accept (or ignore I should say) the new location of the rear O2 sensors WILL. ARH's "Short system" and Dynatech are top quality headers that will bolt directly to your MBRP catcback AND COME with high quality high flow cats.