some aftermarket systems don't need a chip if you are doing a straight 45mm for 45mm swop it's when you go up to 50mm pipes thats when you really need to think about chipping and setting up properly but a chip will make you make the most of the more free flowing pipes can i suggest a JHP or FIM chip i went for JHP and it is spot on for fuelling etc and the bike need no "trimming" or anything |