mr2 turbo wastegate
celicadummie
02-28-2007, 12:52 AM
there are two hoses that come off the wastegate of the mr2's ct26, im just wondering where the other one goes?? i'm only familiar with the one hose that connects to the compessor housing??
JekylandHyde
02-28-2007, 06:41 AM
The other hose goes to the T-VSV (turbo vacuum switch valve).
It controls boost. If everything is operating okay (weather is good, the engine is n't seeing knock, etc.) the ECU leaves the T-VSV open so it vents a little bit of boost so you can make up to 11.8 psi of boost.
If the ECU sees something it does not like, it closes the T-VSV and all of your boost goes to opening the wastegate which will limit you to 7-8 psi.
It controls boost. If everything is operating okay (weather is good, the engine is n't seeing knock, etc.) the ECU leaves the T-VSV open so it vents a little bit of boost so you can make up to 11.8 psi of boost.
If the ECU sees something it does not like, it closes the T-VSV and all of your boost goes to opening the wastegate which will limit you to 7-8 psi.
celicadummie
02-28-2007, 10:32 AM
since im not using the mr2's ct26 in an mr2 application.. my ecu doesn't have TSVS control, so would i be ok with blocking it off and just installing a boost controller so im not limited at 7-8 psi?
JekylandHyde
02-28-2007, 11:05 AM
You got it ;)
celicadummie
02-28-2007, 05:34 PM
cool! i've been puzzled by this for awhile..thanks!
Automotive Network, Inc., Copyright ©2025
