Fabspeed question.

[CloudyLP640]

I own a completly stock E92 M3.

Will I get a CEL if I install a non-resonated Fabspeed X-pipe ?

I got mixed answers by different people.

TIA

[Beemdog]

By deleting only the secondary cats you will not generate a CEL. The Fabspeed X-pipes I have seen mount behind the primary cats and their O2 sensors, which results in a setup that does not throw CELs. All that really matters in terms of engine self-monitoring is that you have primary cats in place (those closest to the engine).

[ZEEM3R]

I have the Fabspeed X pipe and it should not throw any codes if your primary cats are in place.

[CloudyLP640]

Thanks guys.

[M3PO]

Originally Posted by EquipoiseExotic

Thanks guys.

There's no point in installing an X-pipe that doesn't replace the primary cats. They are the source of the vast majority of the power robbing pressure drop in the stock exhaust system.

[BPMSport]

Originally Posted by M3PO

There's no point in installing an X-pipe that doesn't replace the primary cats. They are the source of the vast majority of the power robbing pressure drop in the stock exhaust system.

+1

The Fabspeed setup I had prior to the Akra Evo did have 200cpsi HJS cats. This will cause an SES light. Anything that doesn't replace the factory primaries will not significantly increase output.