Motorcycle Repair: exhaust systems, air fuel ratio, dynojet power commander

Question
I HAVE A STOCK 2002 FLSTSI WITH STOCK EXHUST. I WOULD LIKE TO INSTALL AFTER MARKET SLIP-ON MUFFLERS (FISH TAILS). I AM GETTING A LOT OF DIFFERANT FEED BACK ON THIS SUBJECT. FOR EXAMPLE, SOME SHOPS TELL ME I SHOULD RUN BAFFLED MUFFLERS AND OTHERS SAY I DONT HAVE TO. I LIKE THE BIG SOUND SO I AM CONFUSED ON WHAT TO DO. I LIKE SAMSON FISH TAIL MUFFLERS BUT NOT TO SURE HOW THE BAFFLED SYSTEM SOUNDS. ANOTHER ISSUE IS WHAT ARE ALL THE OTHER STEPS I SHOULD CONSIDER WHEN TUNNING THE EXHAUST SYSTEM. HARLEY DAVIDSON WANTS ABOUT $200 FOR TUNNING THE ECM, I THINK THATS KIND OF PRICIE. ARE THERE ANY OTHER ALTERNATIVES OR AM I STUCK PAYING THE BIG PRICES.  

Answer
do not go to fish tail exhaust pipes this will kill your horse power and torque. and you will never get the bike to run correctly. Harley can not tune your bike correctly with a down load!!! thay can only richen it up. you need a good exhaust system like a white brothers e-series 2 into 1 exhaust system and a dynojet power commander 3 usb installed and dynotuned on a load controller dyno with a air/fuel ratio montor. that is the only way to correctly tune your bike. any other way is throwing your money in the trash   Johnny   602-705-7474