Re: Gutting TVIS : whats done and benifits/downsides ?
Fri, 14 November 2003 13:23
"I'm of the opinion that Toyota aren't idiots, and they stuck it there for a reason. "
But they did remove it from the Gen III design.
I experimented with the tvis on the dyno and it made no difference to power levels on a stock CT26 (18psi) as even pin pointing when tvis was activated in the rev range was difficult to see. With the GT turbo however it was a different story. The power output still remained the same but came on boost 400rpm earlier when tvis was disactivated. To me the runners on the 185 manifold is where the bottle neck is and the tvis has trouble activating in time with laggy units that come on boost suddenly.
Dont go out of your way to remove it but if your doing a rebuild then go for it.
Has anyone removed TVIS from a 4age. I wonder if that makes a big difference?
Fri, 14 November 2003 13:23
