rianshima

Ok a Breif history. My car came with no air pump there for actuators are closed i want to wire them open how far should i open them to wire them open. Is all the way open to far any help would be aweseom !! thank your

CAr: 1990 gxl N/a

Kenteth

many threads on this, especially on how wiring them open is not the best practice. If you do wire them open... wire them open all the way..

totallimmortal

all the way of course anything but that may cause a very not smooth path for air

SureShot

Without the air pump you also loose thr VDI.
For less then $40 you can rig an electric pump and gain ~20HP.

rxhaven7

Is there a write up on this method. very interested.

Kenteth

Yes, there is ony by silverrotor, I am also in the works of using the stock ECU determined auxport times on solenoids for the fab'd electronic aux port activation. This saves $50 by not using an rpm switch. At the moment, it looks like its s5 dependent however.


And you don't really gain 20 hp, you mearly recover it... at best...


EDIT:
Truth is... you may be spending 10hp just to recover that 20hp...:

Coincidentaly, I caught that air pump sucking 30 amps yesturday! I don't know how much that equivalents out to on the alternator drag, but I doub't we are seeing any real improvements to be honest... 30 amps on a struggling system can put it over. I have an FD alternator... and im still a bit bugged by the high current.

All things considered... the stock setup is probably the best method. However you start ditching emissions, and you wind up with no ACV and air pump... if you drive an S5 you wind up no aux ports or vdi. Lucky be S4!

SureShot

With a pressure relief set at ~5 PSI, that pump should draw <10 amps.

Kenteth

ahh touche... i knew there was something i was missing, ty!