I know it is not a 318ti but the engine taken out of one was used in my e30. I was given the engine 5 years ago and it sat on the garage floor all that time. i bought some e36 m3 throttle bodies, fitted them to the m44 and made an airbox so the maf could still be used. I am amazed how well it works without anything being done to the ecu. I have been giving it a good revving and it still keeps going strong
Itbs on the ti m44 
Threaded Mode