My car has all of a sudden started over boosting really bad like 1.9 my defi gauge is saying and it is making a loud hissing noise when i drive it on boost. My car is still running fine to drive and everything just it seems it doesnt limit my boost anymore. Lane from racetorque tuned it to do 1.4 and now its just really erratic. it is a 02 sti by the way and the ecu is a tek 3.