rcebowl

I'm sorry if this is a stupid question..

But I always thought I understood what VVEL was however last night I finally did some research and found this video.


Now I under stand it's a really old video but it shows an interesting part where it compares the VVEL motor to a conventional motor. Which was really interesting to me. I actually never thought VVEL was that complex.

But now it leaves me confused.

1) Are our throttle bodies always fully open?
2) What's the point of a throttle body if you can completely control your values opening and closing?

rcebowl

sooo either it was a really dumb question or no one knows the answer huh?

harbin9er

now i am confused too.

RISKY GUY

iTrader: (9)

I know unless you are tuned,throttle will not open 100%.
Emmison compliance, or smog controls from ecu.
why is it always open,?vvel set up who knows,I have no clue.

Polar_g37s

From what I can understand from that video is that our throttle is open all the time just it never opens 100% but the vvel is so efficient that it does not need to open 100%. I could be wrong but if that lil cross thing on the right of the video is our throttle than I dunno what to say cause it shows it open constantly.

I do know we suffer from lag in our electronic throttle control because it pisses me of 24/7 but I heard tune clears that up with the availability of controlling your throttle response and limitations.

Staples

iTrader: (9)

No the throttle bodies aren't open all the time.


Example, when VDC is on and you start losing traction the ECU will automatically apply brake pressure AND close off throttle (aka throttle bodies will close to limit power).

TVPostSound

iTrader: (9)

Even tuned, it's not 100%.
It can be done, but too unstable.

I have my throttle mapped similar to this.
Notice, 100% open at 100% throttle. Thats is technically removing the 0-60 restriction.
Anything more won't work.