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      12-26-2008, 11:35 AM   #1
Russian Federation

Drives: E92 M3
Join Date: Dec 2008
Location: Moscow

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What will happen if...

I will install the whole exhaust system (Supersprint) with two cats (instead of factory four) with stock ecu managment system? Will everything be ok (no checks, steady work)? or i will have to reflash it with some aftermarket ecu upgrade?

Secound question - same situation, but the exhaust system now without cats at all (Supersprint can provide with catless system)?

Iam sure, most of you here, installed full, headers back systems, any problems, remarks?

Example: On some subaru's(EDM) it is needed to reflash stock ecu to get rid of check engine fault sign, slightly change boost presure setings (decrease boost) for the engine to work properly, on some(JDM) it is not.

In "two words" - will i have to alter software in order it to work properly with new hardware? Or it wont be needed?