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Old 02-07-2009, 10:45 AM   #401
ogboot
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Quote:
Originally Posted by LoveRoadRacing View Post
IAG Performance has solenoid for $25

https://www.iagperformance.com/shopp...p?prod=1997152

Summit Racing has wiring connector for $8

http://store.summitracing.com/partde...0&autoview=sku

Have both parts in hand and they're compatable.
Good find, but IAG doesn't carry them anymore, just called.
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Old 02-12-2009, 08:57 AM   #402
Badmunky
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Dose any one have a map for a 07 stage 2 WRX with the GM BCS?

I want to add this to my car but have not started tuning just yet all thou I have an AP V2 and street tuner Race so I can tune. Just have not done any tuning yet and it seams most on here are using Utec.

My mods as of now are:
Cobb OTS satge 2 tune.
Titek Catted DP.
SPT catt back.
STI I/C.
SPT intake.

Car runs great so far but I want to prep for a VF39 and a front mount and this looks like a good starting point considering what I already have done to the car.
I also want to learn to tune and am on some other forums for that right now.

Thanks for any help you guys can give me.

Oh and I did read the hole thread!
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Old 02-12-2009, 09:53 AM   #403
Rene2.5RS
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I am using RomRaider for tuning so I can help you out.

For tuning the GMBCS there are a couple areas you need to pay attention to, but I am unsure of the exact names Cobb uses to describe them, so in RomRaider these are the tables:
-Initial Wastegate Duty
-Max Wastegate Duty
-Turbo Dynamics Proportional
-Turbo Dynamics Integral Positive
-Turbo Dynamics Integral Negative

Once you get a base for your initial and max duty tables then you need to start working on the dynamics tables, I believe I started out by cutting all of these values by 30%. What the dynamics tables do is correct for boost error, which is calculated by 'target boost - actual boost'. Meaning that the negative values in the Proportional and the Integral Negative tables signify over boosting. The Dynamics tables will adjust the duty cycles of the solenoid to achieve target boost. If you do not work on these table you will get a oscillation in boost which I have attached pictures to show. This is because the GMBCS is much quicker to react then the OEM Bleed style. So say when you over boost and it cuts duty cycles too quickly it drops below target, now it starts to add to quickly causing another over boost, all while it is slowly getting closer to target boost.

You can see an example of this more from the 'New Graph.jpg' example. In the image 'log data 4.jpg' what you see there is after the Negative corrections were slowed down so you only see 2 over boost and very little under boost, but that is what you are trying to tune for using the GMBCS. If you want any help just shoot me a PM.

-Rene
Attached Images
File Type: jpg log data 4.jpg (33.6 KB, 76 views)
File Type: jpg New Graph.jpg (38.3 KB, 77 views)
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Old 02-17-2009, 10:28 PM   #404
Greg555
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so who has them cheapest these days?
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Old 03-10-2009, 08:10 PM   #405
quazimoto
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IAG performance.GM boosted the price up on these things to $40.Ain't that some sheet....
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Old 03-11-2009, 10:36 PM   #406
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Quote:
Originally Posted by dumdum View Post
IAG performance.GM boosted the price up on these things to $40.Ain't that some sheet....
The solenoid is discontinued now from what I have been reading.
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Old 03-12-2009, 12:26 PM   #407
quazimoto
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Quote:
Originally Posted by Kjott21 View Post
The solenoid is discontinued now from what I have been reading.
GM Parts Direct seems to think they can still sell them.
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Old 03-12-2009, 01:28 PM   #408
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I called my local NAPA and GM and they all sell these for $96 + tax

screw that

For $78 I can get MAC valves which are better quality and are used by MoTec, AEM and all major engine management companies.




Greg
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Old 04-17-2009, 02:06 PM   #409
Jasonzemos
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The GM solenoid is garbage.
This thread should be locked.
Everyone should switch to a mac valve.


Have a nice day!
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Old 04-17-2009, 02:07 PM   #410
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Troll much?

Thanks for the useless insight.
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Old 04-17-2009, 02:08 PM   #411
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-----------
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Old 04-17-2009, 02:46 PM   #412
0db
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Quote:
Originally Posted by Greg555 View Post
I called my local NAPA and GM and they all sell these for $96 + tax

screw that

For $78 I can get MAC valves which are better quality and are used by MoTec, AEM and all major engine management companies.




Greg
Do enlighten us how they are better. Or just post a pic and an completely nonquantified claim. Whatever you prefer.
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Old 04-17-2009, 03:22 PM   #413
Jasonzemos
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Ah, I believe this has already been discussed in other threads. If not, the GM solenoid is too slow, it will cause flutter on both internal and external wastegates (audible with the external ones obviously) which causes shockwaves back through the exhaust gas on to the valves. If you're running this solenoid at low boost/low duty cycle you might not be able to distinguish the flutter. The mac valve on the other hand is faster acting, and maintains a cleaner steady state. I recently switched.

Proof: http://www.youtube.com/watch?v=e67KZeG5Hrk

Last edited by Jasonzemos; 04-17-2009 at 03:34 PM.
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Old 05-19-2009, 12:34 AM   #414
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thanks for this thread. good info
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Old 06-12-2009, 10:43 PM   #415
dbronste
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We have a ton of these where I work, for sale. Check out our ebay store: http://cgi.ebay.com/ebaymotors/GM-BO...Q5fAccessories

-Dan
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Old 06-13-2009, 04:49 AM   #416
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What exactly does this able one to do? I am gussing it provides better control over boost pressures using a programmer.
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Old 07-08-2009, 12:22 PM   #417
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Old 07-08-2009, 02:59 PM   #418
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anyone here been using the grimmspeed boost solenoid yet
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Old 07-08-2009, 11:09 PM   #419
motoryder
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Quote:
Originally Posted by dbronste View Post
-bump
Make a for sale thread....don't clog this one.
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Old 07-09-2009, 11:01 AM   #420
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Quote:
Originally Posted by krambte79 View Post
anyone here been using the grimmspeed boost solenoid yet

there should be about 800 people using it already...at least thats what my sales numbers say

Justin
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Old 07-09-2009, 11:13 AM   #421
krambte79
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Quote:
Originally Posted by GrimmSpeed View Post
there should be about 800 people using it already...at least thats what my sales numbers say

Justin
i just got one from you too, i just havnt installed and tuned w /it yet. just wondering if anyone had feedback.
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Old 09-24-2009, 04:01 PM   #422
udelslayer
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Rockauto is jacking these up in price?

ACDELCO Part # 214474 {#01997152, 1997152}

$51.79


WTF?


They're prolly all made in China!
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Old 11-20-2009, 09:57 AM   #423
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Default Full DIY GM solenoid install 56k warning

My check engine light is on p1105 for the fuel pressure solenoid. The stealership here wants 55 for one.
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Old 11-20-2009, 10:10 AM   #424
zombiedog
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I smell troll. ^

Also I'm using the GrimSpeed.

Not even tuned yet and it runs better than OEM. About 10 min install too.
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Old 12-04-2009, 02:44 PM   #425
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Default Full DIY GM solenoid install 56k warning

I got confused of what DIY said about start up map ,when i loaded to megatune I saw that they did almost every thing as a NA m20 with MAF , OK,why they warning us not to drive car ,its just a start up map ,Iam pretty sure that map was much accuret instead of my old one my first lesson of bad tune now the quistion DO I can log those data till 100kpaand keep forced tune the as same as it is ? Iam tryn to make it much smooth ,any opinion?
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