Pump was very easy let you know specs later have to check them again, pump # ect no bulb to pump turn the key and you have pressure, NO OIL INJECTION i think it sucks a bomb waitting to go off,, I can send you picks of the exhaust holes just need to know where to send. Yes the Exhaust is louder but (MORE IN, MORE OUT, = MORE POWER) allways. when i throttle this boat most people on the lake know it, sounds great. when i fire it up with muffs.. my neighbors just love me, you will love it... just hang tight and i will get you the specs. Once again more air and fuel coming in and more exhaust going out = MORE POWER
