Rotary Car Club - View Single Post - Question about single turbo vacuum diagrams

Kane · 10-16-2008, 04:30 PM

I have an 8 - but similar problems; the vacuum signal from those last set of nipples is supposed to be incosistant due to blow-back from the intake stroke of the motor.... I haven't exp it personally; just from my research doing the single turbo on the FD and the turbo on the 8.

The BOV location sounds fine; just don't T into it as it will slow the actuation of the BOV.

As for your BC; I am not sure - I have the Greddy Profec (which has similar solenoid set-up interestingly enough). Normally you want 3 signal lines to the BC; a BOOST ONLY signal (between the turbo outlet and the throttle body; preferably before the IC); a manifold vacuum signal (shows the pressure on the BC screen; used for tuning the thing) and the signal that goes to the wastegate to open it.

If you T from the wastegate and the boost only (IC piping); like run a T fitting or T INTO That area? If you don't T INTO it; blocking that signal line - the BC won't work.

10-16-2008, 04:30 PM	#6
Kane All about the O2 Join Date: Sep 2008 Posts: 295 Rep Power: 17	I have an 8 - but similar problems; the vacuum signal from those last set of nipples is supposed to be incosistant due to blow-back from the intake stroke of the motor.... I haven't exp it personally; just from my research doing the single turbo on the FD and the turbo on the 8. The BOV location sounds fine; just don't T into it as it will slow the actuation of the BOV. As for your BC; I am not sure - I have the Greddy Profec (which has similar solenoid set-up interestingly enough). Normally you want 3 signal lines to the BC; a BOOST ONLY signal (between the turbo outlet and the throttle body; preferably before the IC); a manifold vacuum signal (shows the pressure on the BC screen; used for tuning the thing) and the signal that goes to the wastegate to open it. If you T from the wastegate and the boost only (IC piping); like run a T fitting or T INTO That area? If you don't T INTO it; blocking that signal line - the BC won't work. __________________ My 2007 Turbocharged RX8 Last edited by Kane; 10-16-2008 at 04:33 PM.