Should I stay away from 2jzgte vvti? in JZ/UZ Posted November 28, 2015 · Report reply Easy to make it work. Depends on which ecu you want to go with. Many advantages, including better response and low end torque. My suggestion: Haltech PS2000 or Elite2500 Non VVTi GTE intake manifold (had IAC and mechanical throttle) Or a Premium Japan DBW bypass kit, but if you do this you still need an idle valve.