Prpfec B Help
Thread Starter
Senior Member
Joined: Dec 2001
Posts: 401
From: Miami, FL
Okay, I searched and couldn't get a clear answer.
I have a single turbo
HKS GT Racing external Wastegate
Profec B (original)
The Wastegae has two nipples on the side,
(A) one above the diaphragm
(B) one below the diaphragm
The profec B has three lines.
© back of the profec B unit itself.
(D) Solenoid Motor "in"
(E) Solenoid Motor "out"
Then there's..
(F) the nipple on the Turbo itself.
(G) Intake Manifold, where I get a boost reference line for the RRFPR (No Vacuum)
(H) Intake Manifold, where I get a boost/vacuum reference line for the Boost Gauge, and the vacuum for the brakes.
Can someone explain how they connect exactly?
(B) to (E),
© to (G), etc.?
Thanks in advance..
I have a single turbo
HKS GT Racing external Wastegate
Profec B (original)
The Wastegae has two nipples on the side,
(A) one above the diaphragm
(B) one below the diaphragm
The profec B has three lines.
© back of the profec B unit itself.
(D) Solenoid Motor "in"
(E) Solenoid Motor "out"
Then there's..
(F) the nipple on the Turbo itself.
(G) Intake Manifold, where I get a boost reference line for the RRFPR (No Vacuum)
(H) Intake Manifold, where I get a boost/vacuum reference line for the Boost Gauge, and the vacuum for the brakes.
Can someone explain how they connect exactly?
(B) to (E),
© to (G), etc.?
Thanks in advance..
Senior Member
Joined: Dec 2001
Posts: 2,934
From: Jensen Beach, FL / Sylva, NC
Senior Member
Joined: Dec 2001
Posts: 2,934
From: Jensen Beach, FL / Sylva, NC
Back of profec B get hooked to Boost Referance point on the intake manifold.
The side port (closest to the turbo) of the External WG gets hooked to the intake manifold too for referance pressure.
The IN side of the soleniod motor gets connected to the I/C pipe right after the turbo.
The OUT side of the soloniod motor gets conected to the end port of the external W/G (fartest from turbo) .
Hope that helps.
I used these diagrams:
The side port (closest to the turbo) of the External WG gets hooked to the intake manifold too for referance pressure.
The IN side of the soleniod motor gets connected to the I/C pipe right after the turbo.
The OUT side of the soloniod motor gets conected to the end port of the external W/G (fartest from turbo) .
Hope that helps.
I used these diagrams:
Senior Member
Joined: Nov 2002
Posts: 3,108
Originally Posted by Jims5543' date='Dec 21 2003, 11:48 AM
I want to thank you. I just realized I had mine hooked up wrong. No wonder I have been having so many boost issues.
should've gotten the apexi avcr and be done with it
on a side note... i'm loving my greddy mechanical 60 mm gauage, much more accurate then the greddy 60 mm electronic that took a crap.
the vac is actually correct and actually responds fast.
Thread Starter
Senior Member
Joined: Dec 2001
Posts: 401
From: Miami, FL
Originally Posted by setzep' date='Dec 22 2003, 02:42 AM
Hey Alex, does this mean it's running?
I drove mine on Saturday, got some bugs worked out.
Drove it today, got some boost under me. The car feels like a freaking ANIMAL at 12PSI. 17PSI is insane.. It just roasts the tires any time I mash the throttle in 3rd.
I am in love...
Gauges are working, EGT gauge is not.
I need to place a bead around the IC pipes, as one of them keeps blowing off at >than 10PSI.
Will try again on X-Mas day, re-jet the secondary air bleeds, and try some more.
There is some very un-Florida like cool weather which is screwing with my wideband readings.
I can't complain though, the car is amazing, Mazda shoud've made them (turbo FB's) available to the U.S.