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Old 06-21-2011, 09:14 AM   #451
guciodog11
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hey everyone,

i just installed a MAC valve to control my 20G. My tuner told me that major increases in WGDC had a very small effect on boost pressure. For example,he added 30% WGDC and the boost only increased from 13 to 14 PSI.

I mounted the solenoid on a hard aluminum bracket on top of the intake mani, no rubber grommets or anything. Would the vibrations coming from the engine have anything to do with my issues?
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Old 06-21-2011, 01:25 PM   #452
02RexWI
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Quote:
Originally Posted by guciodog11 View Post
hey everyone,

i just installed a MAC valve to control my 20G. My tuner told me that major increases in WGDC had a very small effect on boost pressure. For example,he added 30% WGDC and the boost only increased from 13 to 14 PSI.

I mounted the solenoid on a hard aluminum bracket on top of the intake mani, no rubber grommets or anything. Would the vibrations coming from the engine have anything to do with my issues?
No, the vibration wouldn't cause that.
What kind of 20g do you have?
I've seen cheap ones that can only make 20 psi. even with the wastegate completely closed.
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Old 06-21-2011, 03:53 PM   #453
guciodog11
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it's a Deadbolt td06. I ghetto fabricated 2 plugs to hook it up to the stock harness out of silicone, i'm thinking that might be creating a short or something. I'll take apart the plugs and report back. Is there any way to accurately check the max psi? I don't have a tactrix cable and i definitely don't want to be looking down at a boost gauge at 90 in third hehe
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Old 06-26-2011, 12:58 PM   #454
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Fixed image links in OP and post #202.
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Old 11-04-2011, 11:38 AM   #455
JDM WRX
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Okay so i am located in Canada and i had given the part number that was stated on the first post of the thread, and the parts advisor stated that the part number is "no good"
So im just wondering if there is a alternative BCS that i can run with my stage 2.5 XPT tune?
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Old 11-04-2011, 12:00 PM   #456
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Quote:
Originally Posted by JDM WRX View Post
Okay so i am located in Canada and i had given the part number that was stated on the first post of the thread, and the parts advisor stated that the part number is "no good"
So im just wondering if there is a alternative BCS that i can run with my stage 2.5 XPT tune?
http://www.grimmspeed.com/catalog/pr...roducts_id=145

Try this
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Old 11-04-2011, 03:14 PM   #457
02RexWI
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I believe this part is now discontinued by GM.
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Old 11-05-2011, 01:48 AM   #458
JDM WRX
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Okay so i guess i should be fine just using the GrimmSpeed BCS?
Or any other sugestions guys?
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Old 11-05-2011, 09:37 AM   #459
SubiSam
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Grimmspeed is your best bet. This thread was started before the Grimmspeed solenoid came out. It plugs right into the factory harness and there are detailed instructions for the rest of the install.
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Old 11-05-2011, 03:10 PM   #460
charlie_sheen
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hey guys i have a question about how my EWG sounds and i think it may be because of the way my GM ebcs is setup. right now its plumbed exactly the way that it should be, port 1 to the turbo, port 2 to the bottom nipple of the wastegate, and Port 3 unoccupied VTA with foam filter over it.

this is how it sounds, any input? it was tuned by Jorge, and he damn well knows what hes talking about, and i trust the fact that its operating correctly, i just want to find a way to make it sound like all of the other EWG out there. its currently a 7psi inner and 7psi outer spring in the Turbosmart Compgate 40.

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Old 03-08-2012, 07:13 PM   #461
BrandonPaquette
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hello i have a 2002 wrx and stock BCS is no longer working on my car and would like to put a Grimmspeed 3-Port EBCS. i know this needs a tune and i have a Cobb AP and AccessTUNER Race Beta can anyone help me tune the new EBCS or have any helpfully tips. thanks
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Old 03-08-2012, 09:19 PM   #462
SubiSam
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Grimspeeds instructions say to decrease mwdc by about 30% but i found that a 20% decrease is more on the money. Great solenoid. I wish it was available when i bought my gm solenoid.
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Old 03-08-2012, 11:17 PM   #463
BrandonPaquette
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what dose mwdc stand for. and how would you go about changing that with a cobb ap and accesstuner race? if anyone knows ?
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Old 03-09-2012, 12:09 AM   #464
SubiSam
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Max wastegate duty cycle. If it fails to reach you boost Target, you need to increase mwdc. If it overboosts, you need to lower it. With open source its easy to change it by percentage. Couldn't tell you how to use the Cobb software, but that is the table you need to change and you shouldn't need to mess with anything else.
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Old 03-09-2012, 12:36 AM   #465
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i have a table called waste gate duty cycles(high). if i can have your email i can send you a pic it looks like the one i have read abut and that your talking about. and that's all i have to do is low each one 20% ?
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Old 03-09-2012, 04:59 PM   #466
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ok so after reading and talking to people from what i understand the waste gate duty cycles is a % of time (pre set) that work with the spring to open and close to build boost. so this would mean in a table that has TP and RPM the lower the waste gate duty cycles % the sooner the waste gate open l(ess boost) when the high the number the longer it takes to open (more boost). now dose that mean the waste gate only fully closes and fully open ??? now as for the EBCS i lower the waste gate duty cycles 30% (example 49.4 TP and 5200 RMP base map waste gate duty cycles 41.8 so taking 30% would make the new waste gate duty cycles 29.26) (right) are there any other table i have to change and if not will i still see a decrease in spool time? just to let anyone know at this point i don't want to increase my boost sitting at cobb stage 1 boost in good for me till i put a turbo back exhaust.
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Old 03-27-2012, 01:52 AM   #467
aboothman
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What a surprise to revisit this thread after several years!! I am honestly amazed at the number of people recommending the $110+ Grimmspeed unit when you can pick up the MAC 35A-AAA-DDBA-1BA (same solenoid) for $30-$40. Plug and play is very temping, but for 3 times the money? I have an extra harness that I can cannibalize if I need to make it plug and play
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Old 03-27-2012, 05:49 AM   #468
ride5000
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a fool and their money are soon parted...
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Old 03-27-2012, 11:17 AM   #469
medamullet
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Quote:
Originally Posted by ride5000 View Post
a fool and their money are soon parted...
I used that boost solenoid back in 2006 and it was ****. They have since changed the design I know. When I was using it the wires that go into the solenoid didnít have rubber grommets (like Grimmspeed has/had) holding them with the plug and play harness. After about a year started giving CEL for low voltage and the wires actually broke off right at the solenoid. I soldered them 3 times before I threw it in the garbage and spent $100.00 on the Grimmspeed unit which I used until about a week ago. I have used TONS of different boost controllers. Ebay has some awesome MBC for less than $20.00 the amount is really isn't relative if you have to spend labor on making it work. I even think itís worth the difference to just plug it in and not have to cut and splice the wires. Itís It really doesnít matter to me where the ďdealsĒ come from. Itís a matter of what you have more of time or money. Mytime is worth more than the $60.00 saving for the hour to splice it together and having to solder the ****ty connections at the solenoid. Just my .02
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Old 03-28-2012, 07:06 PM   #470
aboothman
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You guys speak of "fools" and then tell me that it takes an hour to soldier 2 wires?
You are aware that grimmspeed uses the same Mac valve right? Not
To mention the other aftermarket sources that charge you $100+. Well you know what they say..."a fool and his money are soon parted"
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Old 03-29-2012, 08:12 AM   #471
sorrowfulkiller
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Quote:
Originally Posted by aboothman
You guys speak of "fools" and then tell me that it takes an hour to soldier 2 wires?
You are aware that grimmspeed uses the same Mac valve right? Not
To mention the other aftermarket sources that charge you $100+. Well you know what they say..."a fool and his money are soon parted"
Ah someone who finally understands that buying a grimmspeed boost control solenoid is a wastegate of money. But they do great port work.

Btw I've used both a Mac valve and the ingersall rand valve. Both of which grimmspeed have used. I've never had an issue with either one. Also unless you just suck at soldering the wires shouldn't be breaking off.

Last edited by sorrowfulkiller; 03-29-2012 at 08:17 AM.
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Old 03-29-2012, 04:31 PM   #472
aboothman
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Thanks. I did not come in here to start a fight. I was simply commenting on how a Do-It-Yourself thread has turned into a "go spend $120 on the Grimmspeed Solenoid" thread. In the spirit of this thread I was suggesting a way to get what basically the same solenoid far cheaper for those willing to do the work.

I could also point folks in the direction of the plug needed to make it plug and play, as mentioned by someone a couple pages back.

But man, I wish my time was worth $60-$80 an hour I would probably not be in this thread if it was!!
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Old 03-30-2012, 03:46 PM   #473
medamullet
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Quote:
Originally Posted by sorrowfulkiller View Post
Ah someone who finally understands that buying a grimmspeed boost control solenoid is a wastegate of money. But they do great port work.

Btw I've used both a Mac valve and the ingersall rand valve. Both of which grimmspeed have used. I've never had an issue with either one. Also unless you just suck at soldering the wires shouldn't be breaking off.
It's not the my solder that is breaking it's the wires where the run into the solenoid where I claim is where this solenoid is poorly designed.


And yes, I make more than $60 an hour. My time is worth way more than the time spent soldering. Plug and play. Is for me that's all I am saying.
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Old 03-31-2012, 04:50 PM   #474
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Quote:
Originally Posted by medamullet

It's not the my solder that is breaking it's the wires where the run into the solenoid where I claim is where this solenoid is poorly designed.

And yes, I make more than $60 an hour. My time is worth way more than the time spent soldering. Plug and play. Is for me that's all I am saying.
Sorru bud but I don't see it, if you loom the wires and they aren't tight I just don't see this being a problem.
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Old 04-04-2012, 12:32 AM   #475
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Hey, we are all for DIY...trust me! All of us over here at the shop are DIYers as well. We just wanted to give a simple/full featured plug-n-play option to you guys.

Couple of things to clear up:

1. We've never switched valves. We have always used our customer MAC valve. We have NEVER used the IR valve. (btw, in testing we found the IR valve is not even close to the MAC valve performance-wise)
2. Our MAC valve is not an off-the-shelf valve you can buy. It is similar but we had MAC customize it a bit for us.

Also to reiterate from above...no one is butt hurt here in the DIY vs. GS debate. Two different options for two different people. Completely understandable.


Game on my friends,


Justin Grimm
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