ok, well ive been all over the engine with my stethescope and i cant find it...
little background info. the car is an 03 WRX that is HIGHLY modded, putting out 360HP at the crank. larger turbo, odds n ends. nothing done to the block / valvetrain.
the car is a buddies and i am contemplating buying it as a streetable racecar project.(full cage, it has JIC coilovers, gonna use them till i can get Zeals. full monoball bushings, seamweld... the list goes on)
ok, heres the deal, this is the symptom: 3000-4000 rpm 30%-about 80% throttle i heard what sounds like a rod knock, but it goes right away with; A: Higher RPM or B:give it more throttle. its from the left bank. a few shops cant find anything wrong with the engine itself, they scanned them... then i used my modis on it... and got no code, no tripped sensors, and no irregularities on the scope.
right now im baffled... i looked for loose items that could be rattling and got nothing. i know that spun bearings are fairly common on higher boost WRXs, but wouldnt it be a constant?
anyone with scooby experiance? or have seen somthing like this before? im almost to the point of wanting to pull the engine and take it apart... anyone that knows WRXs knows that engine work is a bitch in the car. any ideas before i get pissy and pull it?