The engine setup Well it looks like this. It has plenty of torque where you need it, when you need it. It is all done with a factory R154! No fancy parts, just good old heavy shock proof! This kind of response on the street is killer. The off boost drivability of this car is nice. This dyno Graph is from a 100% internally stock block/head 2jzgte with a Comp turbo 67mm Turbo. We have had great results on 100% internally stock engines. Change the factory ECU with one of our EMS packages, add some E85, bigger injectors and your choice of Turbochager (Comp turbo, BW, Garrett) on stock internals. This, paired with the factory ECU and cam and crank sensors, is what makes the magic happen. The VVT solenoid This little thing controls oil to the gear to advance and retard the cam timing. this one is located in the the upper banjo bolt of the VVT oil feed line. Other parts that you want to check for optimum VVT reliability is the oil control filter. (Come on! If this was a non VVTi engine you would have spent money for a HKS or Titan gear anyways!) These are easy fixes, buy a new one if you are not sure of it's health. It will strip the gears inside! The other problem is that it leaks. IF you unplug the VVT solenoid and plug it back in while the car is running, yes it can go bad. The VVT gear This is an area of concern for those that are not informed. Adjustments in the overlap time between the exhaust valve closing and intake valve opening result in improved engine efficiency.Įasy right? Wikipedia is your friend! LOL Need to see it in a video? Look bellow! Thanks to Jonathan J. Engine oil pressure is applied to an actuator to adjust the camshaft position. It varies the timing of the intake valves by adjusting the relationship between the camshaft drive (belt, scissor-gear or chain) and intake camshaft. What is VVTi? VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota.VVT-i, introduced in 1996. "no aftermarket support because it doesn't make power." Blah blah blah, blah-blah!!! Yes, I have heard it all!. So, just in case you are reading this, and YOU are one of those who have said these things, or you are one of those other shops doing R&D (Research & Duplication) sit back and learn a few things! "you need expensive engine management to tune it". " what shop is doing it?". "No one will tune it". In the 8+ years I've been working on VVTi engines, some of my customers and I have heard just about every excuse as to why VVTi would not work with high HP applications. I got responses like, "good luck!".