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eddy_amaya08
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[*] posted on 12-3-2011 at 12:19 PM
diy electronic bc


has any one done this found it on diytuning.com im thinking of doing this
http://www.rx7club.com/showthread.php?t=892101




1/8 mile:9.1 @79mph
1/4 mile:13.4 @105mph

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eddy_amaya08
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[*] posted on 12-3-2011 at 12:42 PM


in this case would we be able to use our factory hi and low solenoid?? the same way???



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[*] posted on 13-3-2011 at 06:31 AM


been sayin this for yeeeeeeeaaaaaaaaaarrrrrrrrrrrrrrrrrrssssssssssssssssssss..:smug::deal::deal::deal:


sticky this shit.




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13-3-2011 at 09:53 AM
eddy_amaya08
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[*] posted on 13-3-2011 at 10:47 AM


So can our solenoid be used??



1/8 mile:9.1 @79mph
1/4 mile:13.4 @105mph

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chip18sw
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[*] posted on 13-3-2011 at 05:11 PM


Yes.



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eddy_amaya08
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[*] posted on 13-3-2011 at 05:13 PM


Ok thanks



1/8 mile:9.1 @79mph
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[*] posted on 13-3-2011 at 05:28 PM



My GM Boost solenoid fit well near the factory boost solenoid location.
Usage:
"
100% duty cycle means maximum boost. 0% duty cycle means lowest boost possible (wastegate pressure). The GM Boost solenoid with no power, by default is normally open. This is a good thing, in the event of a failure you will run only wastegate pressure (low boost). You could also use other high speed solenoids in place of the GM Boost solenoid. Be sure to select one that is normally open for safety reasons." From the site.
So I think this would mean that our solenoids are normally open?
But if Revva says it will, it will work.:lachen:





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eddy_amaya08
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[*] posted on 13-3-2011 at 05:59 PM


So I'm gonna be trying this...

[Edited on 13-3-2011 by eddy_amaya08]




1/8 mile:9.1 @79mph
1/4 mile:13.4 @105mph

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[*] posted on 25-2-2012 at 10:06 PM


Got mine waiting to go in after this paycheck when the new turbo goes on, and the exhaust manifold gets repaired. Can't wait to see how well it works. Gonna try out about 15psi on my tune and then go get it professionally tuned.



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rainmaker9239
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[*] posted on 26-2-2012 at 09:15 AM


i'm gonna give it a try i think
but i do know a guy selling an Apexi AVCR for $150 locally. said he would work a bit on the price too. I may spring for that. any thoughts?

[Edited on 26-2-2012 by rainmaker9239]




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[*] posted on 26-2-2012 at 12:39 PM


GM boost solenoid with pigtail is less than 50 bucks.... I think the AVCR can do boost by gear though



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[*] posted on 4-4-2012 at 10:19 AM


Gonna go for this attempt tonight. Gonna use the stock sensor. If it works well i will put up some pics



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[*] posted on 10-4-2012 at 12:09 AM


Ok so here we go.......
After talking with Revva (btw :thanx:) he told me that one of the wires from the factory boost solenoid is constant power and the other is a ground sent back to the ECU. I used a multimeter to confirm which wire is the power. In my case it was the black wire with red stripe.


Now i was planning on using the other wire (signal wire) and pick it up at the back of the ECU, but this creamy tan colored wire proved to be difficult to find at the computer. I remembered though that i had ran a wire for a tach signal that i no longer use but left just in case i would need it again. Well i needed it again and cut it away from my igniter.


Rerouting that wire over to the boost solenoid i cut the signal wire and replaced it with my green wire.


Now from the Emanage i used the Sub-Injector wire #1 which was a white wire with a red stripe.

And i connected that to the opposite end of the green signal wire


Now for the test. I started up the car and my Emanage software and opened up the sub-injector table. Selecting all, I input 100% and took off down the road recording my data. Nothing, not even 1psi :censored:
Changed it to 50%, same story. :curse: So then i got to thinking, mabye my vacuum lines are wrong. :dunce:
I guess so. Here is how they should be
From the boost solenoid there are two pipes. The one at the top should be connected to the outside tube that runs down along side the block and to one of the wastegate nipples and the other one should be run to the small outlet coming off the turbo.:lachen:


For the other nipple i just put a vac line on it and stuffed it with a screw. After that i input 50% duty cycle and i came up with this on my screen. Boosting around 5psi steady.:thumbup:


So i got a little brave and put 20% duty cycle and whoa that boost shot up quick. :deal: Infact a little too quick so i let off the throttle so not to boost past my current tune (nada):nono:


So 50% too little and 20% too much. Why not try the middle at 35%??:dunno: And just like Goldielocks the 3rd one was juuuuuussstt right :pepper:


12psi steady through 1st, 2nd, 3rd, 4th, oops 90mph in a 45mph. (closed course road mind you:naughty:)

Now that i was content i came up to a light and do my U-Turn back to the house. Gave it a bit of gas in 1st. Probably only went about 40mph but seem to catch the attention of a certain fellow with a radio mod who tailed me all the way home for seemingly no reason at all. But anyways i pulled in garage and fired up the ole soldering iron to make this work permanent but since its a crappy Harbour Freight one it didn't work well:hand: But "when in doubt, goo it out" so i got my trusty Liquid Electrical Tape, lol



So there you have it. I didn't get more test time tonight, but for being 1am i think i have put in enough time for this DIY article. If i have any problems arise i will iron them out, but for now it seems like a solid and fun mod.:2thumbsup::bananamac:




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tersplat
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[*] posted on 10-4-2012 at 10:24 AM


awesome. cant wait to see mine when I finally do it. don't forget, you can put the 100% duty cycle before 12psi so you can spool up faster.



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[*] posted on 10-4-2012 at 12:41 PM


What do you mean? Cause 100% makes it only run wastegate pressure. I will play with it more when i get a chance



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