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Old 10-19-2008, 09:09 PM   #151
FleaDog
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Great thread guys. Shamoo from iwsti pointed this to me.

Ive got a grainger 3-port and a tial f38 prepared to go on my STI and am going to ask my tuner to look into adding the hallman and doing this.

Is there a consensus as to the best setup on the EWG? (just bottom port OR bottom + top)?

Here's my grainger by the way (never mind my own #'s):

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Old 10-20-2008, 12:52 PM   #152
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Very informative things are there to get through

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Old 11-12-2008, 03:18 PM   #153
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Iwas running this setup a while ago but took it off to do some stock ECU tuning. I switched back to my UTEC and decided that I wanted to put the hybrid setup back on.

Interesting thing to note for me. When using closed loop boost control in the UTEC, with my boost set to '1' in all TPS and RPM columns I would still hit 19psi.

I switched to Open loop and at 1% duty I am at 13.5 psi which is a little greater than wastegate pressure. I dont know why the closed loop was acting like that but looks like Ill be using open loop for part throttle.

Last edited by PolarisSnT; 11-12-2008 at 03:34 PM.
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Old 11-26-2008, 01:37 AM   #154
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I just switched over to this setup on my car. This setup is awesome! I haven't started tuning for spool yet but this has gotten rid of my boost spikes. I have the MBC set to 1psi below my ECU tune of 20psi and its solid at 19/19.5 psi in 4th and 5th! I love it and I'm sure my engine loves it. =) Next I will try to make the turbo spool faster with more WGDC down low.

Everyone should be using a 3-port along with the MBC! The MBC and the EBC keep each other in check in the event one fails. It's awesome.

I'm not sure its wise to just run crazy values like 100 wgdc through the WOT column and unrealistic boost targets though. If the MBC failed or if someone gave your MBC a few turns without you knowing, you could blow your engine.
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Old 11-26-2008, 01:43 AM   #155
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This is true. When I was tuning the MBC I was at 15PSI to redline, my car actually knocked in that area. I would never had known if it weren't for the MBC.

Quote:
Originally Posted by ride5000 View Post
if you do your own tuning, it is very handy to be able to target different load columns for logging purposes by just turning a knob. you can get a lot of surface mapped out quickly.
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Old 11-30-2008, 07:21 AM   #156
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Well, I've been using this method since April and am still VERY happy with it. I've been using the lighter spring, which seems to work fine at my current boost level (22psi). What springs are you guys running with your Hallman units? When does it become necessary to switch to the heavy spring? I was thinking of putting my heavy spring in to see how it works for myself, but I freakin lost it. Hallman hasn't replied to my email for a replacement either.

BTW, I'm now rockin a DB Super 16g and lovin it! 21psi at redline makes it a totally different car.

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Old 12-07-2008, 08:44 PM   #157
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^^^

bump.

Finally got my hallman evo rx.
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Old 12-10-2008, 12:21 PM   #158
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Quote:
Originally Posted by bucket7788 View Post
Well, I've been using this method since April and am still VERY happy with it.
i've been using this method since july '04 and am still VERY happy with it.

Quote:
I've been using the lighter spring, which seems to work fine at my current boost level (22psi). What springs are you guys running with your Hallman units? When does it become necessary to switch to the heavy spring? I was thinking of putting my heavy spring in to see how it works for myself, but I freakin lost it. Hallman hasn't replied to my email for a replacement either.
no big deal. if you're hitting target boost then everything is fine anyway. the heavier spring would just require less preload (ie fewer turns on the MBC) to hit the same boost.
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Old 12-10-2008, 12:40 PM   #159
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I have been tuning my gm bcs VF39 setup using this hybrid method and it seems that the mbc is controlling the max boost at the moment. I have tried to reduse the WGDC around 3400-3800 and I still hit too much boost. I have taken significant amount of WGDC off but no help. I can only imagine that I have installed it wrong but in the otherhand everything seems to be as it should. Any comments? Is this the way your hybrid boost control setup is working?
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Old 12-13-2008, 09:57 AM   #160
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^^^
diagram your setup?
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Old 12-13-2008, 01:23 PM   #161
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Quote:
Originally Posted by imppu2001wrx View Post
I have been tuning my gm bcs VF39 setup using this hybrid method and it seems that the mbc is controlling the max boost at the moment. I have tried to reduse the WGDC around 3400-3800 and I still hit too much boost. I have taken significant amount of WGDC off but no help. I can only imagine that I have installed it wrong but in the otherhand everything seems to be as it should. Any comments? Is this the way your hybrid boost control setup is working?
make sure that the two systems are truly in parallel... that there are two distinct paths the pressure signal can take between the compressor and the WGA.

with 0% wgdc from the ecu/ems you should net wastegate boost pressure, and with 100% you should have MBC boost pressure.
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Old 01-06-2009, 05:51 AM   #162
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Quote:
Originally Posted by ride5000 View Post
with 0% wgdc from the ecu/ems you should net wastegate boost pressure, and with 100% you should have MBC boost pressure.
I zeroed my WGDC tables and right now I am seeing 14.5psi all the way to the redline. So I guess hybrid setup is working as it should. I was thinking that VF39 wastegate actuator should be around 10psi?

My GM BCS setup is very sensitive, tiny amount of WGDC makes my boost go to the sky.
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Old 01-06-2009, 12:56 PM   #163
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How much does the MBC-only psi vary with temperature? I was just discussing this with a guy at work the other day, he said that might be an issue.

For example, what is the MBC-limited boost at 70 / 50 / 30 degrees F, if you don't make any manual adjustments to it?

Thanks!
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Old 01-06-2009, 06:16 PM   #164
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with the hallman i do not need to adjust for temperature. it is located where the oem bcs used to be.
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Old 01-07-2009, 08:44 AM   #165
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There are small changes with temperature on manual boost controllers. Some are different then others. Generally it's withing half a PSI.
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Old 02-26-2009, 06:01 PM   #166
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can someone explain the difference of how blocking off/not blocking off the open port on a 3port bcs will affect things (iwg) with this configuration? perrin's 3port instructions scream not to block that port off and thus i'm hesitant to do so.
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Old 02-27-2009, 01:24 PM   #167
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Don't block off the port. That is where pressure from the hose running to the wastegate is released. It won't work properly. You either vta or return to inlet.
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Old 02-27-2009, 01:59 PM   #168
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Quote:
Originally Posted by HOLLYW00D View Post
can someone explain the difference of how blocking off/not blocking off the open port on a 3port bcs will affect things (iwg) with this configuration? perrin's 3port instructions scream not to block that port off and thus i'm hesitant to do so.
I blocked off the port and it works great for me. For safety reasons though, I suggest you do what everyone else says.
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Old 03-09-2009, 03:36 PM   #169
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no ****, this is a sticky?
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Old 03-09-2009, 07:18 PM   #170
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This is how a friends car is routed. He is running a utec. on a 2002 wrx. Why is his different and does it accomplish the same task>?
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Old 03-09-2009, 09:39 PM   #171
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If that MBC is a bleeder-style (a UTEC usually comes with one), it can produce more boost.

It definitely won't have the response of a ball/spring (restrictor-style) MBC. Peak boost can be the same though.
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Old 03-21-2009, 09:05 PM   #172
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Alright, so what do i connect to what? (wow this came out kinda nuts)

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Old 03-22-2009, 06:38 PM   #173
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^^^^ bump it
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Old 03-22-2009, 11:59 PM   #174
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I would run it just like the normal Parallel setup. use the side nipple of the EWG in place of the wastegate actuator. Leave the top of the EWG VTA


Last edited by eminehart; 03-23-2009 at 01:34 AM.
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Old 03-23-2009, 01:52 AM   #175
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Quote:
Originally Posted by Rodwrx23 View Post
I blocked off the port and it works great for me. For safety reasons though, I suggest you do what everyone else says.
A signal lock occurs that can cause pressure to build between the wastegate solenoid and the boost controller. It won't function properly. You will probably cause the wastegate to open prematurely and it won't behave reliably or consistently.

With a parallel setup this is less likely to be noticed. If you were not running this setup you will be running in circles trying to tune boost.
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