boost levels lower than usual

[yvng_tanner]

hello everyone i’m making this post because i’m literally out of ideas and it’s driving me crazy. okay so i have been running stratified tuning for a few months now and it was doing good making 25-26 psi but then all of a sudden about a month ago the boost dropped down and i can only get 17-18 psi and 19 psi maybe on a good day. i’ve installed a hard pipe kit from cobb since then to hopefully resolve the problem but it didn’t. me and my buddy smoke tested the whole system and found no leaks, he checked my datalogs and found no problems with wastegate or anything he said it seems to be doing fine to him, given he works at a dynoshop for a living. my mods are mishimoto high flow downpipe, injen intake, turbosmart shortie bov, cobb upgraded fmic, cobb hard pipe hit, full 2.5 inch straight pipe exhaust, stratified custom tune. if anyone has any ideas it would be great because im stumped and would really like to see 26 psi again.

 

[NOVA_Ranger]

Stock turbo says...

 

[yvng_tanner]

nah man the turbo is fine only has 80k some miles. the turbo spools up fine and the car itself feels good and pulls good just not quite the same psi.

 

[Dialcaliper]

Just some suggestions. Check and make sure the BOV you installed is seating properly and not leaking. If your catalyst is going bad/getting clogged up, the backpressure on the turbine side can result in low boost. Check EVAP harness and PCV lines the valves in them for leaks.

 

[NOVA_Ranger]

Ever get it figured out?