Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: leeroy_25 on July 02, 2009, 10:14:23 PM

Title: Double throttle control actuator on a single turbo
Post by: leeroy_25 on July 02, 2009, 10:14:23 PM
(http://i157.photobucket.com/albums/t59/Leeroy_25/RX7%20Turbo%20Conversion/UIMvacunit.jpg)
I am doing a single turbo conversion and want to know where I need to connect the vacuum line to from the unit on the side of the UIM. I believe it is called the double throttle control actuator.
Normally this would have been connect somewhere via a solenoid but these have all gone as part of my single conversion.
Please can someone tell me where I should connect it and if I need to put a one way valve in the line for it? If so is it working under vaccum or pressure?

Thank you
Lee
Title: Double throttle control actuator on a single turbo
Post by: arrouk on July 03, 2009, 08:23:35 PM
it is only there to stop you hammering the car when its cold, as long as you are careful you can just leave it disconnected as it is normally open or remove it all, take the butterfly\'s out, remove the shaft and plug the hole.

matt
Title: Double throttle control actuator on a single turbo
Post by: leeroy_25 on July 03, 2009, 08:48:10 PM
Arrh. I am normally careful but that explains why on the couple of times I have given the car a bit of throttle before it\'s warmed up it felt slow as hell! like someone had disconnected the turbo\'s! Out they come then!
Cheers
Lee
Title: Double throttle control actuator on a single turbo
Post by: Grizzly on July 06, 2009, 12:40:09 PM
Yep that\'s the reason there there..... If the motor still has the factory Thermo pellet in it won\'t do it much good booting it from cold. You have to exercise caution if you do decide to remove them.
Title: Double throttle control actuator on a single turbo
Post by: SiH on July 06, 2009, 12:59:35 PM
If you beast a car from cold you deserve to get damage from it. Double throttle came straight out of mine as I like to think I have some mechanical sympathy!
Title: Double throttle control actuator on a single turbo
Post by: skybusr34 on July 06, 2009, 05:11:15 PM
what is the main benifit of removing this item?
Title: Double throttle control actuator on a single turbo
Post by: memski on July 06, 2009, 09:21:33 PM
Better airflow, less restriction and gubbins on the car.