Hey guys i just had a full exhaust system done to my VE 2009 SV6 (extractors and 100cpi cats 2.25") The guy told me if the engine light dose not come on you will be OK and will not need a tune... but the light has come on... :s i think a o2 sensor **** its self but. So i have read up a bit and people say the VE ECU will adjust for the extra go. is this true? and would a Re tune do anything at all ? with OTR cold in intake and the exhaust.?