Replacing the VVT ​​muffi and installing the manifold - Toyota Corolla, 1.6 L, 1998

After installing the motor, the car, according to friends, did not go very well. There was no top, pickup after 4 thousand, too, everything converged to the VVT ​​clutch. And also annoying rattling like a diesel engine at idle.
This device has been mercilessly replaced. At the same time, we looked at what was happening under the valve cover, all the rules turned out to be there)
Since it turned out that the timing tensioner had not been changed in Poponia, it was also waved along with the shaft seals.

At the same time, we installed a new 4-2-1 Futjitsubo manifold, which had been traveling from Japan for 2.5 months.
The result of the work:
At idle in the general motor is not audible
Exactly at 6 thousand sharp pickup and the motor spins up to 8.300 in a moment, and not as before (barely), and the sound changed, as if the power supply was turned on, the sound immediately became louder! And all this is so clear)) In general, the car fell very well.
Here is the current question why with 6 and not 4x, as it should)

Many thanks to the guru-masters from Lytkarino Pasha and Zhenya.