I am hooking up a HKS evc-s boost controller, and i need to know if an S5 turbo has a boost pressure control solenoid valve or not. It also says i have to hook a line from one of the hks units to a line that goes from the surge tank to the fuel regulator, what would be considered the surge tank? Any help is appreciated!

 

It's a blue solenoid next to the oil fill neck. I dunno what this surge tank, fuel regulator business is all about. Most electronic boost controllers that I've seen have 3 ports, one goes to the wastegate, another to vacuum nipple on the turbo, and one just vents to atmosphere. I'd also like to mention that the hardline on the front of the compressor housing has a restrictor built inside that can effect the operation of your boost controller if you connect to it.

Hope this helps

 

hook up the HKS Boost solenoid in between the Turbo and the Wastegate actuator.
then Hook up the HKS Regulator(?) inbetween the Engine and your aftermarket FPR with the TEE supplied.
you are done.

 

The "surge tank" is the intake plenum chamber where the intake manifold runners collect. What they are asking you to do there is hook up a hose like you would hook up a boost gauge. You are looking for manifold vacuum and pressure. The bottom nipple on the back of the UIM will work well for that.

For the boost controller itself you hook the pressure from the compressor housing to the middle port of the EVC-S solenoid (It might say COM). Then you hook a hose from the wastegate to the left port of the solenoid (might say NO). The right port (NC) can be vented to atmosphere or you can run a hose back to the TID like the factory solenoid does.

 

Thanks alot guys, that was alot of help!