Hey everyone I have a 2016 Lexus is200t FSport and I’m having an issue with my turbo , when driving the car builds boost but after a certain amount of pressure the boost gage moves up and down to a post I have to let off the gas so I’m not under boost pressure, I’m not sure if I need a new turbo or if it’s something else please let me know

 

Welcome to the forum!

Maybe you are having an issue with the regulator? There's a TSB for it.

See these threads:
https://www.clublexus.com/forums/is-...ing-signs.html
https://www.clublexus.com/forums/per...ost-issue.html
https://www.clublexus.com/forums/is-...bo-issues.html
https://www.clublexus.com/forums/is-...ve-issues.html

 

I’ll check that out then, because now it’s like I hear a high humming noise

 

Sounds like the vacuum regulator valve, there's a vid or two in those threads with that sound.

 

ill go take a look at those videos hopefully it’s that thank you

 

The TSB is somewhere on the forum, likely in one of those threads.
The initial TSB had the vacuum regulator valve being replaced...later it was updated to include the hose that attaches to it.

 

yep it’s the vacuum regulator that y’all so much seriously