Installing Boost Controller....
 

hey, i have a 1989 RX7 GT-X and i was wondering, i have a manual boost controller i want to install and dont know which vaccuum hose to cut and wedge the controller inbetween, if anyone could show me a picture or help me out it would be greatly appreciated!...

http://www.turbosmart.com.au/images/...bcv-bt_250.jpg

Assuming your manual boost controller is something similar to this, the side the arrow points to goes to your wastegate actuator and the other pipe goes to the nipple on your turbo compressor cover.

It's quite simple, just need to get your head around the idea of a bleed valve!

Since you have an S5, you have a factory electronic boost controller. If you look at the line from the compressor housing to the wastegate actutator, you'll see it has a tee in the metal section which has a hose on it that leads up to the boost control solenoid clipped to the oil filler neck. You'll need to remove the two short rubber sections of the wastegate actutator line, and connect the MBC with new hoses just like xaymaca said. The factory EBC lines and solenoid can be left as they are.

ahh thanx guys, you rock!...