How to Install Hallman EVo RX PRO
Dec 24, 2004, 10:58 PM
#1
How to Install Hallman EVo RX PRO
So, when I got my hallman pro, and did research on this site, there wasn't a "how to" so I've decided to gather some info and put it up for when people need this info later on.
First, good job on the purchase of hallman pro. This MBC is regarded as one of the more reliable and cost effective way to control your boost.
Especially on Evo RX PRO with incabin controller, you have the control at your finger tips without getting out of the car to adjust boost.
There are two ways to connect your Hallman MBC. For various reasons, some wants to install with Turbo and Wastegate, so they don't get the manifold pressure.
Some connects it with Wastegate and BOV to INtake manifold line tap.
Some of the troubleshooting:
1. If your boost is stuck at 10 or 11 psi, you're connection is wrong. Once you diable the Turbo Wastegate actuator, you're going back to the stock Boost/wastegate boost which is 10~ 11 psi.
This is only when, you're turning the knob to increase boost but it's not going up. Mine started at 11psi and I increase the boost to my desired level of 19 psi.
2. In Evo RX Pro, if your cockpit controller wont turn, you have to either,
a. manhandle and turn it clockwise
b. open the top nipple of the MBC, take the ceramic ball out and the springs and you'll see a flathead screw embedded in it. Turn this counterclock wise a quarter turn. Reassemble.
3. You've boosted 32psi without tuning and without any other mods on your evo and your engine blows up. Blame yourself for it, because it's your fault.
From what I heard, your boost cut/fuel cuts are going to prevent this from happening, but chances are you're going to run extremely lean which will cause some problems for your engine.
4. The instruction says for Evolution RX Pro incabin controller, you need to cut the cable with mig cutter or welder. You don't need that. Just cut it with a pliar. It works. make sure you trim the plastic piece carefully,
Here are things you may want to consider before you start installation
1. Buy some more hoses. You may want to install the MBC somewhere further than the supplied hoses could reach.
2. figure out where to install the mbc before you taking stuff apart. Especially the EVO PRO RX incabin one. It's really difficult to modulate the cable.
3. If you're not mechanically inclined, you're going to spend some time on this.
4. Get a tray to hold all your nuts and bolts.
5. This is worth the time once installed.
What you'll need.
Needle Nose plier
Wrench
10mm Socket
1/2 inch Socket
Phillips screw driver
Zip ties
Your Hallman MBC
Flash Light (just in case you're compulsive like me and wanted to install it 6 in the morning)
Elbow grease
Drill (for hallman EVo Pro RX)
1/2 inch drill bit
ok, now lets go on with the install.
First, good job on the purchase of hallman pro. This MBC is regarded as one of the more reliable and cost effective way to control your boost.
Especially on Evo RX PRO with incabin controller, you have the control at your finger tips without getting out of the car to adjust boost.
There are two ways to connect your Hallman MBC. For various reasons, some wants to install with Turbo and Wastegate, so they don't get the manifold pressure.
Some connects it with Wastegate and BOV to INtake manifold line tap.
Some of the troubleshooting:
1. If your boost is stuck at 10 or 11 psi, you're connection is wrong. Once you diable the Turbo Wastegate actuator, you're going back to the stock Boost/wastegate boost which is 10~ 11 psi.
This is only when, you're turning the knob to increase boost but it's not going up. Mine started at 11psi and I increase the boost to my desired level of 19 psi.
2. In Evo RX Pro, if your cockpit controller wont turn, you have to either,
a. manhandle and turn it clockwise
b. open the top nipple of the MBC, take the ceramic ball out and the springs and you'll see a flathead screw embedded in it. Turn this counterclock wise a quarter turn. Reassemble.
3. You've boosted 32psi without tuning and without any other mods on your evo and your engine blows up. Blame yourself for it, because it's your fault.
From what I heard, your boost cut/fuel cuts are going to prevent this from happening, but chances are you're going to run extremely lean which will cause some problems for your engine.
4. The instruction says for Evolution RX Pro incabin controller, you need to cut the cable with mig cutter or welder. You don't need that. Just cut it with a pliar. It works. make sure you trim the plastic piece carefully,
Here are things you may want to consider before you start installation
1. Buy some more hoses. You may want to install the MBC somewhere further than the supplied hoses could reach.
2. figure out where to install the mbc before you taking stuff apart. Especially the EVO PRO RX incabin one. It's really difficult to modulate the cable.
3. If you're not mechanically inclined, you're going to spend some time on this.
4. Get a tray to hold all your nuts and bolts.
5. This is worth the time once installed.
What you'll need.
Needle Nose plier
Wrench
10mm Socket
1/2 inch Socket
Phillips screw driver
Zip ties
Your Hallman MBC
Flash Light (just in case you're compulsive like me and wanted to install it 6 in the morning)
Elbow grease
Drill (for hallman EVo Pro RX)
1/2 inch drill bit
ok, now lets go on with the install.
Dec 24, 2004, 11:11 PM
#3
With that said, here are some pictures.
The turbo and the wastegate sits right behind the radiator, below the exhaust manifold.
In order for you to get to it, there are 2 ways of doing this.
1. go from the top. This requires a lot of time taking things apart and putting thigns back in.
2. go from the bottom. You'll need to deal with the undertray.
First way goes like this.
1. Take the intake box out by removing 2 screws on the intake box bottom.
2. Take the upper IC pipe out. The easiest way to do this is to take the top rubber piece out, then bottom, then the BOV hose connector by just twisting the IC pipe.
3. Disconnect the Fan and the temperature sensor that's mounted onto the fan assembly.
4. Reach down and see the wastegate and turbo hoses, take them out with a needle nose plier. Take it easy and don't break the nipples.
5. once the hoses from wastegate and turbo is taken out, reach underneath the intake pipe and take the hose out from its nipple.
6. look at the right side, below where the intake box is. That's your Turbo Wastegate actuator. The best way is to remove one of the hose, then cut about 3 inches from the top nipple hose then make a "U" connection with the hoses to close them up.
7. Save the hoses, you may need it later. They have the restrictor pills built in them.
8. Connect the hose to whichever way you want to connect it. And cap rest of the nipples. Cap the intake nipple, you don't need it.
9. Connect the hoses to the mounted MBC, zip tie all the hoses and the caps.
10. put everything back in this order:
Fan, tem sensor for the fan, intake (make sure those metal clips don't fall down and get stuck on stock box. Also don't forget your MAF plugs), the upper IC pipe.
(* From here, there are more steps for EVO RX Incabin MBC. Look below)
11. Go out and set your boost on 3rd and 4th gear. Make sure you reset your ECU, via ECU cables or Battery.
12. Now you're ready to feel the high end boost!
For EVO RX with Inside cabin controller.
1. You'll need to straighten the cable a bit, since it's so round.
2. You'll need to figure out how to mount your MBC, since it's not like the regular MBC, it will come slipping out of the round holder. Your Knob isn't there, it's inside your cabin!
3. Once you get the hoses on your MBC, you'll need to drill a 1/2 inch hole in your firewall.
4. You'll need to figure out where you're going to mount the MBC in the engine bay and inside your cabin. You'll need to do this before all the hoses are cut for length.
5. Once everything is layed out, put the cable through the firewall and mount it inside.
6. The cable is going to be long, depending on where you mount the MBC, so you'll need to cut it and trim it to make sure it'll fit where you're mounting it.
Remember, this cable can't be folded and it is not flexible.
7. Mount everything with the supplied harware, zip tie is properly so it wont get in your way of driving and ALWAYS TEST THE KNOB BEFORE YOU INSTALL.
This is a problem since EVO RX Pro knob does get stuck sometimes.
8. Make sure the Knob inside isn't where someone could get to. You could get a big suprise, when you take your car for a oil change and come out with 32 PSI of boost at 3500 RPM and a BOOM.
10. Enjoy, especially now when its really cold outside, this knob is your best friend.
I could adjust it via fly. I'm on boost, then slow down, adjust the knob, and boost again without ever leaving my car.
The turbo and the wastegate sits right behind the radiator, below the exhaust manifold.
In order for you to get to it, there are 2 ways of doing this.
1. go from the top. This requires a lot of time taking things apart and putting thigns back in.
2. go from the bottom. You'll need to deal with the undertray.
First way goes like this.
1. Take the intake box out by removing 2 screws on the intake box bottom.
2. Take the upper IC pipe out. The easiest way to do this is to take the top rubber piece out, then bottom, then the BOV hose connector by just twisting the IC pipe.
3. Disconnect the Fan and the temperature sensor that's mounted onto the fan assembly.
4. Reach down and see the wastegate and turbo hoses, take them out with a needle nose plier. Take it easy and don't break the nipples.
5. once the hoses from wastegate and turbo is taken out, reach underneath the intake pipe and take the hose out from its nipple.
6. look at the right side, below where the intake box is. That's your Turbo Wastegate actuator. The best way is to remove one of the hose, then cut about 3 inches from the top nipple hose then make a "U" connection with the hoses to close them up.
7. Save the hoses, you may need it later. They have the restrictor pills built in them.
8. Connect the hose to whichever way you want to connect it. And cap rest of the nipples. Cap the intake nipple, you don't need it.
9. Connect the hoses to the mounted MBC, zip tie all the hoses and the caps.
10. put everything back in this order:
Fan, tem sensor for the fan, intake (make sure those metal clips don't fall down and get stuck on stock box. Also don't forget your MAF plugs), the upper IC pipe.
(* From here, there are more steps for EVO RX Incabin MBC. Look below)
11. Go out and set your boost on 3rd and 4th gear. Make sure you reset your ECU, via ECU cables or Battery.
12. Now you're ready to feel the high end boost!
For EVO RX with Inside cabin controller.
1. You'll need to straighten the cable a bit, since it's so round.
2. You'll need to figure out how to mount your MBC, since it's not like the regular MBC, it will come slipping out of the round holder. Your Knob isn't there, it's inside your cabin!
3. Once you get the hoses on your MBC, you'll need to drill a 1/2 inch hole in your firewall.
4. You'll need to figure out where you're going to mount the MBC in the engine bay and inside your cabin. You'll need to do this before all the hoses are cut for length.
5. Once everything is layed out, put the cable through the firewall and mount it inside.
6. The cable is going to be long, depending on where you mount the MBC, so you'll need to cut it and trim it to make sure it'll fit where you're mounting it.
Remember, this cable can't be folded and it is not flexible.
7. Mount everything with the supplied harware, zip tie is properly so it wont get in your way of driving and ALWAYS TEST THE KNOB BEFORE YOU INSTALL.
This is a problem since EVO RX Pro knob does get stuck sometimes.
8. Make sure the Knob inside isn't where someone could get to. You could get a big suprise, when you take your car for a oil change and come out with 32 PSI of boost at 3500 RPM and a BOOM.
10. Enjoy, especially now when its really cold outside, this knob is your best friend.
I could adjust it via fly. I'm on boost, then slow down, adjust the knob, and boost again without ever leaving my car.
Dec 25, 2004, 08:43 PM
#7
Here are the pros and cons of both hook-ups
1. Hooking it up the compressor outlet nipple:
A. This way gives you less spikes but slower spool up.
B. It does not seem to give repeatable boost. It seems
to fluctuate more with the temperature.
C. Boost seems to be harder to control below 15 psi or
above 22 psi. Almost everyone who wrote me
said this.
D. It is easier to hook up this way. No cutting any
boost lines. Plus the lines are kept shorter.
(Thus the less spikes).
2. Hooking it to the hose between the BOV and the intake:
A. This way seems to give slightly faster spool up than
the other way.
B. It gives more repeatable boost. It doesn't seem to
fluctuate as much with temperature differences.
C. The boost seems to be more controllable down to
stock turbo levels. (Like down to 7 or 8 psi for a 1G
with a stock 14B turbo).
D. It is more work to hook up. You have to cut the hose
between the BOV and intake and tee it in. (Not
that this is hard, its just an extra step so I put it
in here)
1. Hooking it up the compressor outlet nipple:
A. This way gives you less spikes but slower spool up.
B. It does not seem to give repeatable boost. It seems
to fluctuate more with the temperature.
C. Boost seems to be harder to control below 15 psi or
above 22 psi. Almost everyone who wrote me
said this.
D. It is easier to hook up this way. No cutting any
boost lines. Plus the lines are kept shorter.
(Thus the less spikes).
2. Hooking it to the hose between the BOV and the intake:
A. This way seems to give slightly faster spool up than
the other way.
B. It gives more repeatable boost. It doesn't seem to
fluctuate as much with temperature differences.
C. The boost seems to be more controllable down to
stock turbo levels. (Like down to 7 or 8 psi for a 1G
with a stock 14B turbo).
D. It is more work to hook up. You have to cut the hose
between the BOV and intake and tee it in. (Not
that this is hard, its just an extra step so I put it
in here)
Last edited by burningmoney97; Oct 27, 2005 at 08:54 PM.
Trending Topics
Dec 25, 2004, 08:50 PM
#8
great post - here is a few other links to help out the installer 
https://www.evolutionm.net/forums/sh...d.php?t=114672
https://www.evolutionm.net/forums/sh...ht=mbc+install
https://www.evolutionm.net/forums/sh...0&page=1&pp=15
https://www.evolutionm.net/forums/sh...d.php?t=114672
https://www.evolutionm.net/forums/sh...ht=mbc+install
https://www.evolutionm.net/forums/sh...0&page=1&pp=15
Dec 26, 2004, 03:27 PM
#10
Evolving Member
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I just installed it to the bov line and , wow what a difference almost no taper 1.4bar tapers to 1.4bar. hold all day. but without tuning is it safe to have a little more constant boost?
Jan 2, 2005, 03:10 PM
#13
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anybody know why my boost goes from 21 psi to 15 psi? it seems to not hold at 21... could i have installed it wrong?... and does the boost gauge stay at 18 psi vacuum when you start the car? i am new at this so i dont really know...
Jan 2, 2005, 03:42 PM
#14
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the BOV line method is better. Someone was going off on me saying that his was incorrect (some WRX owner).. but i had it installed the other way and the boost was inconsitant and all over the place. The only boost that matter is the amount that actually reaches the TB to be injested into the engine.
Jan 2, 2005, 05:12 PM
#15
my boost is consistant with bov line tap. I may try to connected it to the turbo/compressor later on just to see, but seems to work out fairely well.
I think your boost is tapering down to 15psi because of few reasons.
1. it could be your bov. it's leaking
2. it could be your hoses that's connected to the mbc, it's leaking.
3. it could be your way of driving, you're letting off the throttle a bit after you wot.
4. mine tapers down on 3rd gear sometimes and i've found it to be the throttle response that's causing it. But it could be the stock evo pos bov.
On the hallman evo pro ex in dash controller, there is a mounting bracket that comes with spring loaded boost adjuster knob.
You could mount that in curves or straight from the engine bay.
But if you want to mount that somewhere in the engine bay, you just have to cut the adjuster cable all the way down and mount that on the frame or somewhere else in the engine bay.
If you want to mount the knob flat inside, I would suggest trying autozone or pepboys or even home depot for the right mounting hardware, since it doesn't come with it.
only other way I could think of is bending the "L" shape mounting bracket that comes with the kit and straighten it up, so it'll be a "l" shape then you could drill a hole for the knob to come through on some surface and mount that on a flat surface.
I think your boost is tapering down to 15psi because of few reasons.
1. it could be your bov. it's leaking
2. it could be your hoses that's connected to the mbc, it's leaking.
3. it could be your way of driving, you're letting off the throttle a bit after you wot.
4. mine tapers down on 3rd gear sometimes and i've found it to be the throttle response that's causing it. But it could be the stock evo pos bov.
On the hallman evo pro ex in dash controller, there is a mounting bracket that comes with spring loaded boost adjuster knob.
You could mount that in curves or straight from the engine bay.
But if you want to mount that somewhere in the engine bay, you just have to cut the adjuster cable all the way down and mount that on the frame or somewhere else in the engine bay.
If you want to mount the knob flat inside, I would suggest trying autozone or pepboys or even home depot for the right mounting hardware, since it doesn't come with it.
only other way I could think of is bending the "L" shape mounting bracket that comes with the kit and straighten it up, so it'll be a "l" shape then you could drill a hole for the knob to come through on some surface and mount that on a flat surface.
