I understand that the p28 cannot control the secondaries. I am also told that the vacuum line must be blocked in order for the secondaries to remain open. I took a look at my diaphram and runners. I saw that a vacuum line was connected and that the diaphram had the lever fully extended, which I assume is full open. I started the car and let it idle for a vacuum. I noticed that the diaprham arm was still fully extended which meant that they were still wide open. Is this normal? I thought the line had to be disconnected in order for them to stay open? I have a stage2b hondata if that makes any difference.

 

yeah, for them to stay open you have to disconnect the vaccum hose.
On the stock car , when you turn the car on the engine creates vaccum, the actuator should go up and close the iab's

 

is my acuator broken or something?

edit: just pulled off the vacuum line and felt no vacuum. Anyone have a vacuum schematic?


Modified by Aeka GSR at 9:43 AM 5/9/2004

 

ok I got a diagram. Would I be correct in assuming that the vacuum tank is worthless with the p28? I could just remove it, right?

 

Go to pgmfi.org and learn how to add IAB control to your P28.

 

im not worried about the runner control at the moment, the turbo seems to make up for it, heh.