hey guys, where can i get a GM boost Soleniod from, for my AEM to control?

any help would be great, thanks

 

any gm dealer that has a parts finder. look for it off of an 86-87 grand national and i am pretty sure the 89 turbo t/a had one also. if i remember correctly, gm calls it a pulse width modulator.

 

Here are the Part Numbers:

G.M Boost control Solenoid part# 1997152, $10.32
G.M Pigtail for the boost solenoid part# 12102747, $13.20

On http://www.gmpartsdirect.com/

 

here is a better idea.




more information


these are the same solenoids used with the popular NLR, innovative, & world motorsports boost controlers

 

Cool, thanks Dave. I was looking for something to replace my GM boostg sol. so that I could run braided line and hose ends for vac lines......this will do it for me and at a nice price too!

 

damn...the pig tail is more than the solenoid, haha

 

so the parts you listed here will work for me right? work for the AEM EMS?

thanks for the reply guys.

 

Yes that will work with the AEM.

 

I just got in a couple of the new aem soleniods, they are pretty nice. rated to 120psi and they are completly metal with 1/8 npt ports. Put one in a supra last night, much easier to control than the gm soleniod, and full boost is 100% duty, wg spring is 0%, not the other way around like hte gm (ie you have something fail and it goes to the wg spring, not full boost like the gm would)

 

Now since there are a couple options. How does the Perrin unit compare to all these solenoids? How much is each. What is the part number for the humphrey unit.

The AEM sounds to be a nice one. Got a pic of it?

 

What I like about the GM BCS is that it's cheap, readily available, and stealthy. Mine's tucked into a corner of my engine bay and VERY hard to see even if you're looking for it. I might just have to check out the AEM one though...

Tim

 

the perrin soleniod is a little bigger than the aem soleniod nad the top 1/2 is plastic, there is no documentaion about how much pressure it can take. It works pretty good, way better than the gm soleniod, but i think the aem soleniod works better.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">I just got in a couple of the new aem soleniods, they are pretty nice. rated to 120psi and they are completly metal with 1/8 npt ports. Put one in a supra last night, much easier to control than the gm soleniod, and full boost is 100% duty, wg spring is 0%, not the other way around like hte gm (ie you have something fail and it goes to the wg spring, not full boost like the gm would)</TD></TR></TABLE>

didnt you make a post awhile back about how you can set up the solenoid in the aem software 2 differant ways ? sorry if this is not "clear" enough for you, its a vague memory.

 

it depends on how you route the vac lines.. if you set it up to use top and bottom wg ports then the gm defaults to full boost, aem and perrin default to wg spring.

you can use the "invert" function to make it so that when you have a "bigger" number in the wg duty table you get more boost w/the gm, but the computer automaticly inverts it, so that when you see 100% on teh screen, its actually 0% and vice versa. regardless, when hte vac lines are setup for best performance the gm will always default to max boost.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">it depends on how you route the vac lines.. if you set it up to use top and bottom wg ports then the gm defaults to full boost, aem and perrin default to wg spring.

you can use the "invert" function to make it so that when you have a "bigger" number in the wg duty table you get more boost w/the gm, but the computer automaticly inverts it, so that when you see 100% on teh screen, its actually 0% and vice versa. regardless, when hte vac lines are setup for best performance the gm will always default to max boost.</TD></TR></TABLE>

You lost me a lil bit, but basically in other words no matter how the AEM software is setup the solenoid will always default to max boost because of the way the solenoid is designed.

This might be a stupid question, but what defines max boost? Just depends on how you have your tables set up?

 

It's a normally open solenoid, so if you run it to the top of the wastegate and the computer doesn't send it a signal, it'll run max boost. Ideally, you want to run a normally closed solenoid to the top of the gate.

 

where can i get one of these AEM ones from? how much are they going for? our race season starts on sunday (23rd) so i need one pretty soon-ish

 

Here is a pic of the solenoid from AEM