VVEL provides valve timing and has nothing to do with engine RPM. The throttle body regulates airflow and the MAF and O2 sensors tell the computer how much fuel to add through fuel injection to maintain the best A/F mixture.

If you want to learn how our engines work, read the shop manual. There is an incredible amount of detail there.
Brian

 

Incorrect.

Read the info from the designer:

Quote "VVEL-equipped engines control air amount at intake-valve by the combustion chamber entrance, which enables necessary air to be sent promptly to combustion chamber, resulting in better response."

http://www.nissan-global.com/EN/DOCU...0713VVEL-e.pdf

 

I stand corrected. Thanks for posting the info.
Brian

 

It almost seems that while the VVEL setup is far more complex, it offers alot of opportunity for aftermarket ECU upgrades, but at the cost of a much high barrier to entry.

 

UpRev has cracked the VVEL programming, but still dont know what to do with it!!

 

VVEL is variable intake lift, like BMW's Valvetronic system. Your throttle plates snap open just above idle and your right foot is effectively tied to valve lift.

Not sure how dirty TB's cause rough idle either, but enough people have the issue that I believe it. Cleaning should be an easy DIY.

 

That's a cool presentation. Thanks for posting the link.

It compliments this article I had read previously that talks about how the engine was built for 1000hp+

Nissan 370Z Review; Engine (VQ37VHR) > 370z.com > 370z.com - Magazine

Since the motor has been out since 2006, I'm still curious as to why the ECU programmers haven't embraced it more openly. Maybe the complexity is a major barrier. I have to agree that the operation is not easy to grasp, especially if you have to unlearn what you already know about cams, valves, intakes, etc. VVEL is like one big control loop.

The new uprev tune thread on here is encouraging.