i swapped in a usdm h22 into my 92 prelude si...im running with a p13 ecu...when i turn the car on, its struggles a bit...once its turned on, it will idle at about 2000rpm...

once the car is warm, the idle drops to about 400rpm-600 and the car shakes and looks like its gonna shut off...

the gas pedal gets "stuck" and i have to floor it hard to make it get loose....when i try hitting the gas, from about 500-3000k rpm, the car chokes and makes these backfire noises....after 3000k rpm, the car runs normal

car also idles bad and i can smell raw gas coming out from the exhaust


any ideas what could be wrong with it?

 

anyone?