i finally fixed all boost leaks that i am aware of on my supra, i pulls really good in 2nd and 3rd but once you hit 4th and 5th you cant feel or tell you hit boost at all?? i have a bad knock sensor thats not hooked up that wouldnt cause a problem would it?? also my LSD acts worn out sometimes it works right others it one wheel wonders alot, i was thinking just a frsh fluid change in the rear end might help?? Thank for any advice i am new to working on supras i got one to build up and restore, but i just switched over from the vw scene so im used to working on vw not supras lol