1190 de noid with race ECU- result ?

[Mike]

AKA -

Sorry, but you don't seem to get it..!
The "return" spring isn't strong enough to eliminate all rear butterfly movement during hard, mid to high rpm full throttle.

But you are free to abide by "your..." understanding...your engine..!

Mike

[Doosh]

The "return" spring isn't strong enough to eliminate all rear butterfly movement during hard, mid to high rpm full throttle.

No, but my throttle hand is, and that keeps the throttle from closing. If at mid-throttle air pressure were drawing the butterfly valves open, one would very much notice it as surging. For all practical purposes the front and rear butterfly valves are physically/mechanically synchronized, so this concern of separate action between the cylinders you describe just doesn't happen. And, if such an action could happen, it would happen whether you tied off the 'noid pull point or not.

Go pop open the airbox and take a look in there and get familiar with how it works. It's incredibly similar to the 1125r era -- more or less the same throttle body design spare the injectors.

But you are free to abide by "your..." understanding...your engine..!

Given that it's correct, I will ;)

There's no downside as I see it to tying them off, though... so go for it.