well i couldnt wait so i installed the bleedvalve not long ago and took the car for a fang. initial impressions are that revs build up alot fast and smoother - dont know how, but most importantly it holds the pressure bloodly well. best $35 ive spent at this stage it beats my profec a ebc which needed to learn boost curves yaada yadaa. but with this one, its just straight on, set and drive. one happy chappy, cheers mark.