Variable Valve Timing with intelligence (VVT-i) This system selects the ideal intake and exhaust valve overlap under all engine operating conditions. VVT-i virtually eliminates the traditional compromises between low-end torque and high-rpm horsepower. It also helps enhance fuel economy and reduces emissions so effectively that it eliminates the need for the exhaust gas recirculation (EGR) emissions device.
Variable Valve Timing with intelligence (VVT-i) This system selects the ideal intake and exhaust valve overlap under all engine operating conditions. VVT-i virtually eliminates the traditional compromises between low-end torque and high-rpm horsepower. It also helps enhance fuel economy and reduces emissions so effectively that it eliminates the need for the exhaust gas recirculation (EGR) emissions device.
Hmm...on the celica 2zz it was a fixed point, so what's the range?
On the 2ZZGE there is definitely a point of notice at a little above 6200 RPM.
If you never rev it over that point, you never know what this little powerplant can do.
It (the point of change-over to the higher profile cam lobes) varies a little depending on model year and the ECU used, and it is de-activated before the
engine is fully warmed-up.
It (the 2ZZGE) also incorporates Lift into the equation and has the ability to also choose between two cam profiles, (thus it is known as VVTL-i)
I drove a Matrix XRS 6 speed for a few months and my best friend has a Lotus Elise (both powered by the 2ZZGE) I LOVE that engine
I would guess the range to begin around 4000-4200 RPM for the FJ
BTW, the Tundra 5.7L and the family 3.5 in the Avalon and Camry, etc. varies both the intake and exhaust side of the valvetrain
I'll have to make it a point next time I'm driving in a more spirited manner to try and notice it. I'm used to honda's vtec and when you hit that crossover when it switches cam profiles, it's a thing of beauty. Be interesting to play around with the crossover point as you add mods and see if you can't extract more power. I guess I could look at the dynos to see where it happens as well, didn't think of that before...
With the VVT-i, I thought the profile changes constantly depending on temperature, throttle position, load, etc... so there really isn't a distinct crossover point.
DEWFPO
__________________ 2007 FJ, 5AT, Sun Fusion Yellow, CQ, UP, GY, RB, 2Q, EL, VS.
"Wanted - young, skinny, wiry fellows, not over 18. Must be expert riders willing to risk death daily. Orphans preferred"
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SF Pre Runner - Flowmaster Series 50, Razors with BFG KO's, R.E.D Light Bar, PIAA 520's and PIAA 510 Fogs, AF HL Covers, Hella Dual Horns, Dirty Parts Dual Battery, aFe CAI, Vent Visors, Trail Gear Sliders, Demello Skid, AP 2" FOX Adj Res. Suspension, upper and lower Links, Shock Skids, Sway Bar Links, AP Airdam/light bar w/PIAA 510's, Coleman Rack Basket, Hi Lift, Spidertrax spacers, Tuffy Cargo Box and Ellis Interior Grab Handles.
2007 FJ, 5AT, Sun Fusion Yellow, CQ, UP, GY, RB, 2Q, EL, VS.
Linear Mode
