You can most likely install straight pipes with no problems if you do not mess with the air intake... at worst you would have to re-jet the carb. I had a 1995 800a with straight pipes... man was it loud... almost to excess... I ended up installing some short baffles in the pipes to tone it down a bit... it has a stock air box, but had been re-jetted... spark plugs always looked good on it.anyone know if its bad to put straight pipes on?
It's basically a fuel metering orfice inside a carb, the larger the jet the more fuel that can get to the motor, but this only needs done if other mods have been done to increase air flow and exhaust flow. My old 1995 800a had straight pipes, but used the stock air box with a high flow filter, and was re-jetted... all of which was done by a previous owner... so can't really tell you how much power increase was noticed, but I know it was done right because of how the spark plugs would look when removed (no black- too much fuel or no graying that would indicate to lean and too much heat) a nice light brown and very clean with little to no build up.i keep hearing re-jetting, what does tht mean exactly. sorry bit new to this.