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Sambo88
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Fri Aug 04, 2017 11:54 am |
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Joined: Tue Jun 09, 2015 7:15 am Posts: 79 Location: Brisbane, Australia
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terryjr wrote: asking if anyones tuned a Perrin EBCS pro. the bullet valve type. they are supposed to have a faster response time I would juat start at 15hz and go up until its smooth. I would be it will work best at around the same as the mac.
_________________ 09 audm wrx - merp full sd mode - running edm forester rom AZ1G101M
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Makaveli
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sat Aug 05, 2017 2:10 am |
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Joined: Fri May 10, 2013 12:31 pm Posts: 86 Location: Australia
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Not sure if 05DC8A this it right for AZ1G900C? only 9.02?
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Sambo88
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sat Aug 05, 2017 2:12 am |
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Joined: Tue Jun 09, 2015 7:15 am Posts: 79 Location: Brisbane, Australia
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Makaveli wrote: Not sure if 05DC8A this it right for AZ1G900C? only 9.02? Quite possible!
_________________ 09 audm wrx - merp full sd mode - running edm forester rom AZ1G101M
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Makaveli
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sat Aug 05, 2017 3:24 am |
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Joined: Fri May 10, 2013 12:31 pm Posts: 86 Location: Australia
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Sambo88 wrote: Makaveli wrote: Not sure if 05DC8A this it right for AZ1G900C? only 9.02? Quite possible! I wouldn't have a clue how to find addresses  So i just took one of the address from previous page i'm guessing if it was wrong the numbers would be messed up. Any know if the Pierburg 3-Port is a 10-40hz Solenoid like Mac, Grimmspeed etc
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The Lorax
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sat Aug 05, 2017 4:23 am |
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| RomRaider Donator |
Joined: Tue Nov 04, 2014 11:51 am Posts: 219
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Makaveli wrote: Sambo88 wrote: Makaveli wrote: Not sure if 05DC8A this it right for AZ1G900C? only 9.02? Quite possible! I wouldn't have a clue how to find addresses  So i just took one of the address from previous page i'm guessing if it was wrong the numbers would be messed up. Any know if the Pierburg 3-Port is a 10-40hz Solenoid like Mac, Grimmspeed etc Address is C009A - 15.27Hz
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Makaveli
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sat Aug 05, 2017 4:51 am |
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Joined: Fri May 10, 2013 12:31 pm Posts: 86 Location: Australia
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The Lorax wrote:
Address is C009A - 15.27Hz
Great! Thank you.
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throttlehappy
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sun Aug 06, 2017 3:26 am |
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Joined: Sat Feb 12, 2011 11:27 pm Posts: 2032 Location: Northern NSW
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Hex Editor search for 3FF761A8 is the key to finding the value
LGT - A2UG002T/A2UG001G/A2UI000Y/A2UI000Z is 0x0C026A Gen5GT is same as WRX/STi etc
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trez0r
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sun Aug 06, 2017 7:33 am |
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| RomRaider Donator |
Joined: Fri Sep 02, 2016 8:42 am Posts: 514 Location: Riga, Latvia
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Sambo88
Did you experience a situation when increasing the ebcs frequency drastically decreases the WGDC needed for target boost up until point of it being unusable? Terryjr and I run the carberry rom and there setting the ebcs freq to say 20hz makes needed wgdc quite low - such as 20% to reach 20+psi. This obviously makes it all too sensitive to be practically usable.
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Sambo88
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sun Aug 06, 2017 7:52 am |
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Joined: Tue Jun 09, 2015 7:15 am Posts: 79 Location: Brisbane, Australia
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trez0r wrote: Sambo88
Did you experience a situation when increasing the ebcs frequency drastically decreases the WGDC needed for target boost up until point of it being unusable? Terryjr and I run the carberry rom and there setting the ebcs freq to say 20hz makes needed wgdc quite low - such as 20% to reach 20+psi. This obviously makes it all too sensitive to be practically usable. Yes this is to be expected, the higher the frequency the less resolution you will have. What solenoid valve are you using? I am on 31hz and i get 24psi with 30% duty. With a lower flowing valve (smaller than a mac) such as stock or anything similar you will have a hard time venting the boost at a higher frequency. "Opens and closes too fast to vent the pressure"
_________________ 09 audm wrx - merp full sd mode - running edm forester rom AZ1G101M
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trez0r
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sun Aug 06, 2017 8:21 am |
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| RomRaider Donator |
Joined: Fri Sep 02, 2016 8:42 am Posts: 514 Location: Riga, Latvia
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Closing of wg can be slowed to some extent by restricting the vent port. Our endeavours are documented in this thread viewtopic.php?f=15&t=13829We started because we wanted to get rid of the wg flutter. I've given up on this since I found going back to stock solenoid and bleed style plumbing was quiet enough and much more controllable.
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Sambo88
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Sun Aug 06, 2017 8:36 am |
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Joined: Tue Jun 09, 2015 7:15 am Posts: 79 Location: Brisbane, Australia
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This is more aimed at someone running atmo wastegate and high boost. I run 30psi so its night and day for me. Most standalone ecu's have the ability to change solenoid frequency for this exact reason
_________________ 09 audm wrx - merp full sd mode - running edm forester rom AZ1G101M
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terryjr
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Mon Aug 07, 2017 12:10 am |
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Joined: Mon Nov 30, 2015 6:31 pm Posts: 482 Location: Pittsburgh PA
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Per the MAC valve site, the standard rectangle 3ports have a .10 flow coeficient, while the bullet valve has a .24 Cv. That combined with the much faster valve response makes me think we can ramp up the hz while using a bullet valve and still have decent resolution. 0-1000hz range for the bullet. 10-30 for the 35a series old retangle version
I get my valve tomorrow. So we'll see. Im going to jump right into interrupt routing rather than bleed style
38mm tial vta ewg, targeting 29psi
_________________ Exotruck - CarBerry 4.2 - Closed deck hybrid - 580whp on E75
Last edited by terryjr on Mon Aug 07, 2017 6:34 pm, edited 1 time in total.
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jon7009
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Mon Aug 07, 2017 12:27 am |
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Joined: Thu Dec 18, 2014 10:31 pm Posts: 1529 Location: oregon
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nice. interested to find out your results.
_________________ if you're generous, feel free to donate. venmo @ jon7009, 1047 when asked jedilley@gmail.com for paypal
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terryjr
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Mon Aug 07, 2017 10:54 pm |
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| Experienced |
Joined: Mon Nov 30, 2015 6:31 pm Posts: 482 Location: Pittsburgh PA
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results should be tomorrow. just got it hooked up. only subie with a corksport controller starting with 15.27hz and 25% duty cycle. target 28psi 
_________________ Exotruck - CarBerry 4.2 - Closed deck hybrid - 580whp on E75
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gamble_wrx
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Post subject: Re: Possible to change frequency of pwm feeding ebcs????? Posted: Tue Aug 08, 2017 2:50 am |
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Joined: Mon Mar 11, 2013 10:17 pm Posts: 23
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Ok, so with an A2ZJ710J, i cant even find a greyed out table for the frequency. Running merpmod currently on maf in process of switching to SD.
Any insight? The wastegate flutter is killing me.
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