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Quick question, can I fit a Milltek sports cat downpipe without a stage 2 map and it not bring on an engine management light?

Thanks,
Andy

It did take a few 1000ks but I did get a CEL eventually after fitting the DP. But went Custom Code phase 2 after and that wrote out the sensor and never had a CEL since.

i drove with milltek exhaust and sportcat for about 2 years and no mapping, never had any problems or lights on my dash or what so ever...

I've had a full milltek turbo back w/sports cat on since last September without a map and no problems so far..