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Title: Exhaust mod question Post by: Bun-bun on June 12, 2008, 06:58:04 PM I'm thinking of either cutting and coring my stock exhaust, or upgrading to a set of aftermarket cans.
My question: if I do either of these, will I have to change the ECU? Bike is an '02 620 dark ie. Title: Re: Exhaust mod question Post by: NAKID on June 12, 2008, 07:53:39 PM Coring or slip ons, no. Full system, possibly...
Title: Re: Exhaust mod question Post by: macker on June 12, 2008, 08:03:01 PM I have a full system I guess, cat elim and custom tips and when I took the bike in for the 1000 km service they were surprised the bike was running as good as it was with the stock ecu, it had a little surging issue during warm up thats all.
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