Increased horsepower and lighter weight; two things SLP exhaust systems are well known for Exhaust system goes through a rigorous engineering process including dyno testing and field verification This ensures maximum horsepower with unmatched reliability Finished with ceramic coating which not only looks great, but also reduces radiant heat emissions by as much 40%, resulting in cooler under hood temperatures Included are detailed instructions which include clutching and jetting (if applicable) and EFI mapping information so that you can enjoy the opportunities you have to ride instead of tuning SLP Tested and passed SAE J-2567 stationary sound test below 88 decibels No ECU modification required. EXHAUST SNGL PIPE SKI DOO