my s13 sr is breaking up @5k when it starts to build boost... even if i roll into it. WOT it pulls, but it wont make power, slow as dog shit, the bov hardly works now and it takes forever for the turbo to spool up.just did new plugs, and re routed some vaccum lines, tightened some couplers, and it idles better but wont build boost. The car was set at 14psi via adj wastegate, then i fixed some boost leaks and now its at 10. Im running the isis 3871 turbo, and it was fast before this started happening, now it just feels slower than a stock sr... Probably a boost leak/ or maybe a bad coil pack...just getting some ideas.

Also im having a kind of squeeling noise when im starting from a dead stop in my tranny. like a belt, but it got a lil grind to it also. It also happened when im downshifting and the clutched is engaged between the downshifts. i bled the clutch master and thee wasnt any air at all. im stumpped and it seems like every day it gets worse.

 

vacuum at 10 that to low fifteen i believe is normal do a boost leak test