Hi All

 

Sorry to go back to this again, but I have installed my Profec B and mapped the boost - seems to be fine though the settings I ended up with a afir bit lower for SET and GAIN than some others posted on here. I used a 'T' tap into the vacum line on the driver's side, where it comes off the plenum, and I think it is part of the AIV circuit having just read another posting here. Is this ok? I assumed one vacuum line was as good as another as long as they went to the plenum... I avoided the fuel reg line as it was suggested a leaking pipe might cause it to lean out... The boost / vacuum pressure on the display with it all switched off seems to make sense. :confused:

Have you disconnected the stock actuator solenoids ?

Oh yes, done all that... With the unit switched off it boosts to standard actuator base boost - about 6-7 psi, so I know it's all as it should be. I was just wondering about tapping into the vacuum hoses... I mean, they all come off the plenum, so as long as you pick up off whichever vacuum line straight off the plenum and obviously before any sensors - actuators etc that may be in the line, it should be ok, am I right? I'll try and take a photo of where I have plumbed in. It reads -5psi ish at idle too...

Oh yes, done all that... With the unit switched off it boosts to standard actuator base boost - about 6-7 psi, so I know it's all as it should be. I was just wondering about tapping into the vacuum hoses... I mean, they all come off the plenum, so as long as you pick up off whichever vacuum line straight off the plenum and obviously before any sensors - actuators etc that may be in the line, it should be ok, am I right? I'll try and take a photo of where I have plumbed in. It reads -5psi ish at idle too...

 

can't see a problem with how you piped it mate,taken mine from the same place and works fine!! ;)

Check all the pipes that are connected to the one you've tee'd into, as a leak in one of them will give a bad reading.

Oh ok, that's good then! I'll shut up and drive it. ;-)