OK I'm trying to get my turbo stuff straight. Learning things here and there. But one thing I'm confused with to this day is... CAN A BOOST CONTROLLER LOWER BOOST... lower than the w/g spring i mean. Thing is I have a DSM T-25... some people saythe w/g opens at 10psi... some say aroudn 7-8psi. If it were 10psi I was thinking I'd have to get a new canister w/ a lower psi spring from TEC but someone told me he tried that and that doesn't work. So i'd need a whole new w/g actuator assembly. So question is... can i lower the boost w/ a mbc or ebc or can it only be raised?

 

No. lowest boost is whatever your wastegate is set at.

 

I have a question.

If you have lets say a nice tial wg with a .45 bar (6-7psi) spring... and you get a electronic OR manual boost controller and set them at 7psi... would this help the turbo spool/hit max boost sooner since your not relying on the wg spring and "leaking" like the wg would? Just curious.

 

yes, if you have a EBC or MBC, thge WG stays shut until the preset boost you had set it on your BC....instead of using a spring loaded controller in a WG...

before I installed my AVC-R, my WG start letting off at 4psi with a .45 bar spring, I can hear it so early while building boost...

then I installed the AVC-R, the WG stayst shut until .55 bar, then it's open all the way like a V8 on crack, kicking all the street cars out there...

 

LOL dont forget scarin all the pedestrians on the sidewalk, sometimes causin them to jump into the bushes for fear of their lives!

 

OK that's what i thought. someone was trying to tell me otherwise but I just wanted to make sure.