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Old 11-22-2011, 04:55 PM   #576
BrandonDrums
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Quote:
Originally Posted by dwmoss_68 View Post
It doesn't seem to fit the inexpensive part of the request.

One of the advantages of the gmbcs was it's price tag compared to the alternatives at that time.

dm
Haha, this I know and they have appeared to have increased in price so scratch my initial response. I do recall that there's a company that makes essentially the same BCS as the Grimmspeed (in design) but it's used for something like industrial refrigerators?

I never knew the name but the dude that I think told me that is a tuner and I recall him saying that he's used them before, they are wicked cheap but he still preferred the Grimmspeed. I could have dreamed that or made it up, but I do recall having some sort of convo about that a few years ago. Wish I could back that up.

However, it looks like you can still totally get a GM BCS.
Amazon.com: GM 3 port BCS Turbo Boost Control Solenoid Valve 1997152: AutomotiveAmazon.com: GM 3 port BCS Turbo Boost Control Solenoid Valve 1997152: Automotive

It appears that either there's still tons of inventory on them or AC Delco makes them as a replacement part. They just aren't 12 bucks anymore, you'll have to settle for around 30 bucks for the unit plus the pigtails.

I have an extra one sitting around too never used with pigtails.
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Old 11-22-2011, 05:28 PM   #577
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MAC makes one, as well as parker hanifin. Just go to an industrial hydraulic supply store and get one.
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Old 11-22-2011, 05:58 PM   #578
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i dont know if this is any indication of how well an ebcs is working.....but the gm ebcs's seem to take way more wgdc to achieve target boost than the perrin & GS units.
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Old 11-28-2011, 04:22 PM   #579
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Originally Posted by FleaDog View Post
Re-did my diagram, looks a bit cleaner, shows 3-port grimmspeed EBCS, hallman evo rx MBC better in their parallel configuration:

Alright, so I have read through this thread a few times. Maybe its just because I am not all that knowledgeable in this sort of thing, or maybe I am missing something, but I am really confused.

I currently have a GS EBCS, and I bought a Hallman ProX in hopes of running a hybrid setup. Current turbo is a TD04 with the internal gate still in place.

My question is, is the above diagram correct for plumbing this with the exception of the external gate? I guess what I mean to ask is, do I just run port 2 to the "T", and have one end of the T going to the IWG, and the other to the side of the Hallman?

Also, I had read about capping off #1. Should I, or should I not? If so, why? What effect does this have?

If the above is all wrong, would someone please be kind enough to help me route my setup correctly? I would greatly appreciate it. Also, if its not too much trouble, a brief explanation as to why it needs to be that way?

I am sorry if I am asking dumb questions, or have overlooked something. I am just trying to learn.
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Old 11-29-2011, 12:03 AM   #580
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Port 1 in that diagram should be capped off - and cap off the corresponding fitting on the turbo inlet. With the BCS venting pressure through that path, the MBC will never be able to route any pressure to the wastegate actuator. So basically the MBC stops working.
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Old 11-29-2011, 12:33 AM   #581
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Great! Thanks. So, aside from capping off port #1, the rest of the diagram should work out ok for me, right?
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Old 11-29-2011, 03:00 PM   #582
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Just wondering what ports on my tial 38mm vband ewg to block when using hybrid setup? and which one to use!
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Old 11-29-2011, 03:01 PM   #583
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U don't block off any of them. Leave the top open....hose goes to bottom port
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Old 11-29-2011, 03:06 PM   #584
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Quote:
Originally Posted by Phatron
U don't block off any of them. Leave the top open....hose goes to bottom port
Just any bottom port? besides the cooling lol
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Old 11-29-2011, 03:11 PM   #585
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^ sorry i was thinking of the old tial.....the 3 ports on teh bottom of the mvs are all the same (its an "easy install" feature)....so pick whichever one is easiest to route teh hose to and plug the other 2

its funny because the "easy install" feature makes you either have to mock up the wg and figure out which port you're gonna use then take it out and plug the other 2 holes.....or you install it and have to still reach the other 2 holes and plug them. it really doesnt make anything easier lol

Last edited by Phatron; 11-29-2011 at 03:18 PM.
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Old 11-29-2011, 03:22 PM   #586
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Quote:
Originally Posted by Phatron
^ sorry i was thinking of the old tial.....the 3 ports on teh bottom of the mvs are all the same (its an "easy install" feature)....so pick whichever one is easiest to route teh hose to and plug the other 2

its funny because the "easy install" feature makes you either have to mock up the wg and figure out which port you're gonna use then take it out and plug the other 2 holes.....or you install it and have to still reach the other 2 holes and plug them. it really doesnt make anything easier lol
plug the other air ports up right? then plug the cooling ones up just so dirt don't get in the ewg?
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Old 11-30-2011, 11:34 PM   #587
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looks like i need a new ewg
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Old 12-01-2011, 01:12 AM   #588
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The top port on the gate stays 100% open. You can plug the water ports. The only Vac port you will use on the gate is the one on the side.

Why do you say you need a new WG?
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Old 12-01-2011, 01:54 AM   #589
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Quote:
Originally Posted by DoWork
The top port on the gate stays 100% open. You can plug the water ports. The only Vac port you will use on the gate is the one on the side.

Why do you say you need a new WG?
we have done every combo possible. and its still only gettin wastegate pressure which i have the 14.5 pound spring. it will not hold any boost and letting it open to soon. Im tuned at 21.5 well i was lol.
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Old 12-01-2011, 02:22 AM   #590
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Did u remember to put the valve seat in? It kinda just looks like and extra flange but it needs be put in or the valve won't seal and u won't hold boost


Last edited by Phatron; 12-01-2011 at 02:29 AM.
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Old 12-01-2011, 02:58 PM   #591
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Quote:
Originally Posted by Phatron
Did u remember to put the valve seat in? It kinda just looks like and extra flange but it needs be put in or the valve won't seal and u won't hold boost
yes its there.
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Old 12-01-2011, 03:54 PM   #592
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best way to test is to take the ebcs out of teh equation. just run the mbc. if you can make boost, then you have teh hybrid setup plumbed wrong.

or if you have a hallman and didnt put the heavy spring in you wont be able to hold boost....or if you have some crappy off brand mbc.

how are your initial and max wgdc tables setup? if they are far apart (IE initial is 10% and MAX is 95%) then you wont be able to ever get to MAX wgdc unless you setup the turbo dynamics to be able to add that much wgdc. the stock value is around +15%
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Old 12-01-2011, 04:46 PM   #593
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How are you guys setting up the MBC prior to tuning? All the way to +, all the way to -. halfway inbetween?

the half way made the most sense to me, but I wanted to see what others were doing.....
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Old 12-01-2011, 05:14 PM   #594
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i usually turn it 3-4 times. then go out with the logger up....do a pull in 2nd up to 5000rpm....look at the max boost hit. If the max is 12psi and im targetting 20psi i'll turn it 3 times and do another pull. 16psi.....turn it twice....19 psi....turn it half a turn.

When the mbc is out far turning it does nothing....as the spring compresses it takes less of a turn to increase the boost. So at 12psi 1 turn wont do anything where as at 20psi 1 turn will add 2psi
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Old 12-01-2011, 05:58 PM   #595
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Cool, I think I got it. Thanks! Just to be sure, you are saying turn it 3-4 forward from minimum, right? I hope to get mine in tonight and get some logging done tomorrow(I hope, Christmas shopping is messing with my free time lol). Finally got the car running again last night.

I'm sorry if I am asking dumb questions, I have never really dealt with anything like this before.

Last edited by DoWork; 12-01-2011 at 06:05 PM.
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Old 12-01-2011, 06:19 PM   #596
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Quote:
Originally Posted by Phatron
best way to test is to take the ebcs out of teh equation. just run the mbc. if you can make boost, then you have teh hybrid setup plumbed wrong.

or if you have a hallman and didnt put the heavy spring in you wont be able to hold boost....or if you have some crappy off brand mbc.

how are your initial and max wgdc tables setup? if they are far apart (IE initial is 10% and MAX is 95%) then you wont be able to ever get to MAX wgdc unless you setup the turbo dynamics to be able to add that much wgdc. the stock value is around +15%
its at a shop and they have just run the mbc and say it still don't hold and have just ran it straight from turbo and still the same thing. as far as the tune idk. i also have a turbosmart mbc with grimmspeed ebcs
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Old 12-01-2011, 06:53 PM   #597
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Quote:
Originally Posted by DoWork View Post
Cool, I think I got it. Thanks! Just to be sure, you are saying turn it 3-4 forward from minimum, right?
well....you can try to turn it 4 turns out from minimum but i dont think you'll get very far

Quote:
Originally Posted by 07wrx84 View Post
its at a shop and they have just run the mbc and say it still don't hold and have just ran it straight from turbo and still the same thing. as far as the tune idk. i also have a turbosmart mbc with grimmspeed ebcs
well...99% of the time these things are install/routing error. theres the 1% of time that you actually get a bad ext wg, mbc or ebcs but thats very rare.

so they already installed the mbc, then tried cranking it all the way shut and it had no effect on boost? if so then the problem lies in the ext wg.
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Old 12-01-2011, 07:47 PM   #598
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ya do you have a diagram maybe? but ya seems everything lies to the ewg. we had it working fine until i fixed a leak. so by fixing the leak it made my car run rich. so my tuner leaned it out a bit. but after that it stopped working correctly. come to find out the ewg had a small crack. we sent it back to TIAL to get fixed. they fixed the leak, but to no avail the ewg does not hold boost.

Last edited by 07wrx84; 12-01-2011 at 07:52 PM.
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Old 12-01-2011, 07:51 PM   #599
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There's about 800 diagrams in this thread
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Old 12-01-2011, 08:02 PM   #600
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i guess Im the 1% fml lol
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