JerseyShoreFC

I seem to be having some problems with boost in my S4 now that I installed a TurboXS HPBC. Before I installed the controller, I was boosting about 4.5-5 psi. It felt normal while building boost. When I installed the controller I set it the way TurboXS says to, which they stated is about an additional 1-3 psi. When I open the car up, I feel the boost come on a little faster and stronger but at about 3 psi it sounds as if the bov opens and closes extremely fast and the boost bounces between 1-2 psi until I let off the gas. Can someone please help me out. Is there something wrong with the controller or is it just not set right?

arghx

iTrader: (3)

You're sure you hooked up the hoses correctly? Isn't there an arrow on the controller? I've used their standard boost controller, it looks similar. What you are describing sounds like a boost leak though.

JerseyShoreFC

Yes, they are hooked up right. I double checked them. I checked for leaks to see if anything blew off, but I ziptied the connections and the one I couldn't get to is still connected.

arghx

iTrader: (3)

are you sure your blowoff valve isn't leaking? What blowoff do you have?

JerseyShoreFC

It is a blitz dd bov. I don't know if the bov is leaking because the car was idling at 17-20 vacuum before the controller (small leak somewhere) and still is. I tightened down on the adjustment screw and it did the same thing. I have that thing almost all the way in (almost 18psi)!

J-Rat

iTrader: (2)

Wonder if the wastegate actuator/spring is toast.. How hard is it to manually actuate the wastegate?

Hypertek

iTrader: (3)

im going to say you need to adjust it , dont rely on turboxs's specs.

JerseyShoreFC

Well, I think i figured it out. I have an air pump that lets me set the pressure before i turn it on, so I checked the wastegate and it is working fine. I decided to hook the pump up directly to the controller and when I turned it on, the two adjusting screws leaked. The coarse screw cannot come out all the way so I adjusted the controller as best as I could and sealed the screws with red rtv. I will find out if it worked tomorrow because it takes 24hrs for the rtv to cure.

arghx

iTrader: (3)

My old TurboXS standard MBC failed on me. It was a piece, I tossed it.

JerseyShoreFC

Nope. The controller still doesn't work. I'm returning and getting my money back. Thanks for all the fast responses though.