loss of power
 

I need some serious advice I have not had my car for a week waiting for my pettit ecu to arrive. the day I got it and started driving I found i had a raidiator leak so I replaced the raidiator cap problem solved,but then when I tried to turn on my car it would hesitait and turn off I would wait a second then it would start up like regular . this keeps hapening ,after that the next day when i had my boost and air fuel gauges put on the check engine light would come on ,plus I noticed a loss of power and when i would be in between 4and 5 thousand rpm it would make a weird noise but stops if i let go of the gas and i still have that starting problem so I got it read and these codes came up 09 water temp 06 vechile speed 13 map sensor. I dont know what to do can some one out there help me out please.