dual throttle plates? What is this part.

[dsagers]

Auction says it is from a 91 Q45, doesn't look like the TB on my car?

http://cgi.ebay.com/ebaymotors...35039

Thanks

[Q45tech]

The extra throttle system for TCS

[dsagers]

Thanks for the info.

I bought this to experiment with, and have a couple questions.

Looking for info on the voltage used to move the valve blade.

Does the ECU just open and close the valve, or is the position of the valve adjusted to somewhere between full open and full closed depending on what the ECU orders up.

Finally, does the motor that moves the blade, move according to short impulses, or is the blade held in a less than full open position by a constant signal and the more voltage sent, the more the valve moves?

Thanks in advance for any help.