How To: Greddy Profec B Spec 2 Install

03BlkMicaSPD

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2003 MazdaSpeed
HOW TO Greddy Profec B Spec 2 HOW TO

This is how I installed my Greddy Profec B Spec 2. Disclaimer crap: Use these instructions at your own risk. Install was easy and works perfectly for me.

Suggested: Disconnect the Negative battery terminal.

First, read the entire install instructions in the manual.
Now, check your parts list and make sure you have them all.

The first step in installing would be the boost gauge hose. Find the hose coming from the FPR as seen in the first picture. Cut it and install the three-way splitter. Cut a 6-inch piece of the supplied small hose (4mm) and connect it to the splitter. Now install the supplied filter and connect the remaining hose to the other side of the filter. Run the hose to the right side of the engine bay and leave it there for now.
pic1.JPG


Next I installed the 6mm Brass hose fittings supplied into the "COM" and "NO" holes in the Valve Unit. Then I mounted the valve unit using the rubber washers supplied. I used the stock air box bolt because it was a perfect fit and location but you must have a CAI or SRI for this, otherwise find a location to mount the Valve Unit away from heat as much as possible. If you have it close enough to the wastegate you can use the hose already connected (allows evidence free removal). I had to remove the factory clamp because the hose would not quite reach.
pic2.JPG


Now cut enough hose to reach from the "NO" hose fitting on the Valve unit, to the factory T splice in vac hose shown below. Remove bottom hose from wastegate and connect the new hose.
pic3.JPG


Now depending on where you mounted your Valve Unit, Connect the hose from the wastegate that was removed from the T into the "COM" hose fitting on the Valve Unit, or remove the factory tamper proof clamp and vac hose from the wastegate and run a new longer one. Be sure to zip tie each new hose in place. Greddy supplies two hose clamps that I used at the Valve Unit connections.
pic4.JPG


Now route the wire harness from the Valve Unit to the back right of the engine bay, being sure that it wont get pinched by anything when the hood is closed. Zip tie this in place also along its route to prevent it getting crushed or cut. Now locate the nice little grommet at the back right of the engine bay. Cut a slit in the right side that has nothing routed through it. Now this is the hard part. Push the vac hose for the boost gauge and the Valve Unit harness through this hole in the grommet. I used a flat head screwdriver to help me get them started, then found them under the dash and pulled them through. Be sure not to pull too much or you will disconnect the hose or break the wires.
pic5.JPG


Now find a good place to mount the EBC Unit (but do not mount it yet). I chose the pocket under the center dash bezel because it required no extra holes for the hose and wires. Now route the hose and wires and zip tie them as you go. Removing the storage compartment under the radio makes this a little easier and also lets you connect the power and ground wires. Now tap the power wire and ground the black wire to a bolt in the body of the car. Sand the paint to ensure good contact is made. For the power I used the small red wire in the padded radio harness that is located right behind that pocket below the radio. Its the only all red wire on the radio side of the harness. Now connect the vac hose, the harness from the Valve Unit, and the Power Harness to EBC unit. Mount the Unit with the double-sided tape.
pic6.JPG


Test for power and make sure vac pressure is reading. Now tune it slowly by following the directions in the manual. Turn the large knob to increase boost by increments of two percent at a time and have a friend check your boost pressure at WOT. Increase until desired boost is reached. Dont set "start boost" higher than your boost setting or it will cause over boost. I leave gain around 10. Boosting over 10 will hit fuel cut without FCD.

If you have any questions email me at Stang98chrome17s@aol.com
~John~
 
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nice how-to! Good Job. This will be very helpful when I go to put mine in.
 
Nice work John! Did Matthew help at all or did you get to do all the work and take photos?

How much different does it drive now?
How's the new turbo working?


____________
Saevii
Titanum 03.5 MSP #944
(Now located in San Antonio, TX)
 
Figures you post this a week after I finally get my installed! Nice write up, its almost exactly how mine went in.
 
What happens if you already have the hose from the FPR that is already split to a boost gauge that you have installed in your car? Is it safe to use another T-splitter INSIDE the car so it splits to the profec B and the boost gauge at the same time without having any effects on boost readings or whatnot?
 
yes it is perfectly fine to use a splitter inside the car for both profe and boost gauge. That is how mine is install
P6220047.JPG
ed now.
 
Question: I have a boost gauge already installed and it is connected via the manifold line.

Can I just leave the boost gauge the way it is, and hook up the GReddy unit via the FPR like it suggests in the manual and as demonstrated in this how-to?

There is also an "NC" port on the valve, does this need to be capped or you just leave it uncapped? The manual says to remove all cap covers.

Thanks!

Mark
 
Mark94 said:
Question: I have a boost gauge already installed and it is connected via the manifold line.

Can I just leave the boost gauge the way it is, and hook up the GReddy unit via the FPR like it suggests in the manual and as demonstrated in this how-to?

There is also an "NC" port on the valve, does this need to be capped or you just leave it uncapped? The manual says to remove all cap covers.

Thanks!

Mark

I took all my caps off. You can either "Tee" off the boost gauge line or run a new one off the FPR.
 
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Is there a reason why they say to tee off the FPR line and not the intake manifold line? Do you get a more precise reading there? Because I was about to tee it off the manifold line just like the boost gauge install.
 
It doesnt matter where you hook up the boost gauge on the EBC. actually I would reccomend going off of another vacuume source. in 90 degree + weather here in NC, The selonoid in the FPR vacuume line will switch off leaving me with no signal to the gauge portion of my EBC. This also puts you back to stock boost. It happened all the time when i was trying to get a pass in at the track. Going off the same line as your existing gauge would be the easiest route.
 
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