Originally Posted by blankstar43
may be interested, but is there any reason somebody couldnt use the euro spec version? Are the secondary sensors needed for some reason?
A cel light will pop up on your dashboard with a "increased O2 emissions" notification on your nav screen. A race tune such as ess, evolve, etc can delete the cel lights. But as far as performance goes, I never had any problems with the xpipe. You don't need secondary O2 sensors because the xpipe only has high flow cats.