TVIS Disconnect = MID RANGE GRUNT
There are really only a few free mods, add this one. Give it a shot, if you don’t like it, switch it back!
On hearsay, we disconnected our TVIS to see what happened to the low end and midrange, and from SOTP testing, we maybe lost a little low end, but gained quite a bit of midrange where the TVIS used to switch over. Later gen J-SPEC motors got rid of TVIS all together, hmmmm. Remember to plug the hose with a screw.
This documentation in no way replaces the Toyota MR2 Repair Manuals. The purpose of this content is only to provide supplementary information to fellow MR2 enthusiasts. Midship Runabout and its contributing authors will not be held responsible for any injury or damages that may occur as the result of practicing any of the methods or procedures described within this website. Article and photo submissions are property of the contributing author.
