Thanks for the info. I was mostly curious about the lift RPM. Would it be better to open it up at 5000, or is the relationship of the valve timimg too critical? If the valvetrain opens on the lower RPM, the timing might throw a valve into a piston. Would you want to change the pistonrings, pistons a...

First question...what is the designation of the VibeGT VVTL-i engine? 1zz? 2zz? Would it be possible to change the RPM speed where the valves open up? If that could be lowered to 5000, the engine would have the kick through all the gears except the low end of first. The best way to boost power there...