boost control

[shoguntalon]

Hey im installing the greddy profec spec II and was wondering which hoses i plug into the com and no ports. I read the write up but it didnt really help me out. Do i want to use the two hoses that connect into the stock boost control solenoid ? sorry it's a little vauge but i hope it gets the job done.

 

[spoolup]

First, no you can not use the lines that went to the BCS, reason being is that he BSC has a line that connects to the intake, and the Prof B only requires a pressure source. So, to install:

A) follow the hoses from the BSC to the wastegate, the compressor housing and intake and remove them.
B) use a cap and plug the hole left over on the INTAKE pipe.
C) install a new hose and run it from the wastegate nipple to a area where you have the Greddy valve unit installed.
D) run a new hose from a BOOST reference, you can use the port that you removed the original line from for the BCS IF NOT BE SURE to block that port as well (alot of people prefure to take it from a spot AFTER the IC beliveing it prevents boost spikes, I have never verified this to be a correct statement however) and run that hose to the same area as in the last step.
E) take the hose from wastegate and plug it into the COM port of the greddy valve assy.
F) take the hose from the boost reference and connect it to either:
------1) the NO port for a internally gated turbo
------2) the NC port for a externally gated turbo
G) remove the protective cap of the port not used in the step above and leave it open
H) I always use some sort of clamp or zip tie to secure hoses so they cannot come off while driving. If you would like, do that step now
I) double check your work, MAKE SURE you plugged the hole in the intake pipe (and turbo as necessary), start the car, test drive. If everything looks good, slowly adjust the boost controller to the level desired.

Here is a link to the Greddy website with install directions: http://www.greddy.com/tech/PROFEC_B_SPEC2.pdf


Also off topic, www.utdsm.org check us out. Happy boosting.

 

[shoguntalon]

sorry one more question. On the wastegate actuator the hoses split into a T one runs to the bcs and the other into the turbo housing. Do i want to take those hoses off and plug the hole on the turbo and run connect the house to the actuator then to the valve assembly? Or should i just connect it to the T and still let the hose go into the turbo?

 

[spoolup]

I would remove the factory hose/T combo, and just use new hose, nothing is worse than finding a leak in one of those little hoses besides its about $0.50 a foot at napa, then just follow the instructions above.