tial 38 to Ebc
10-30-2014, 10:38 PM
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tial 38 to Ebc
Hey guys.. having an issue controlling boost with my profec b .. any one have the proper way to hook up vacume lines .... I can get it to run off spring pressure by connectiong to charge pipe but once I out the ebc in the equation it boost very very high uncontrollable
10-30-2014, 11:03 PM
#2
Make sure your solenoid is being used to augment the spring pressure. Below picture is for my EBC (yet to be installed, so someone tell me if I have reasoned through this incorrectly). How is yours set-up WRT to drawing below?
ASSUMPTION: you are running dual port and not single.
ASSUMPTION: you are running dual port and not single.
10-31-2014, 12:17 AM
#3
You most likely have your lines reversed.
10-31-2014, 09:48 AM
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I thought I had my boost control figured out but I guess not. I'm having the same trouble controlling boost by this method. I have my vacuum lines connected the exact same way as depicted in the drawing but can only boost to 10 PSI (spring pressure). The ports on the solenoid I'm using function the same as well. When energized ports 1 and 2 are connected and when not energized ports 2 and 3 are connected and port 1 is blocked.
I control the solenoid by a duty cycle table and have put 30% or 60% or 90% duty cycle throughout the entire table but cannot boost above 10PSI.
I assume that the solenoid working at 90% duty cycle would allow more than enough pressure to pass and assist the waste gate's spring. Evidently this is not the case or my solenoid is junk.
I control the solenoid by a duty cycle table and have put 30% or 60% or 90% duty cycle throughout the entire table but cannot boost above 10PSI.
I assume that the solenoid working at 90% duty cycle would allow more than enough pressure to pass and assist the waste gate's spring. Evidently this is not the case or my solenoid is junk.
10-31-2014, 10:32 AM
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I thought I had my boost control figured out but I guess not. I'm having the same trouble controlling boost by this method. I have my vacuum lines connected the exact same way as depicted in the drawing but can only boost to 10 PSI (spring pressure). The ports on the solenoid I'm using function the same as well. When energized ports 1 and 2 are connected and when not energized ports 2 and 3 are connected and port 1 is blocked.
I control the solenoid by a duty cycle table and have put 30% or 60% or 90% duty cycle throughout the entire table but cannot boost above 10PSI.
I assume that the solenoid working at 90% duty cycle would allow more than enough pressure to pass and assist the waste gate's spring. Evidently this is not the case or my solenoid is junk.
I control the solenoid by a duty cycle table and have put 30% or 60% or 90% duty cycle throughout the entire table but cannot boost above 10PSI.
I assume that the solenoid working at 90% duty cycle would allow more than enough pressure to pass and assist the waste gate's spring. Evidently this is not the case or my solenoid is junk.
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10-31-2014, 11:27 AM
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10-31-2014, 11:42 AM
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I'd have to dig around the garage, I'm sure I printed it and had it pinned to the wall at some point. Probably stuffed in my toolbox somewhere. It was a long time ago - I only ran it for a short while. Had a bad batch of zip ties, one failed and let the wiring under the hood fall down and hit the exhaust. Shorted the solenoid driver... so I went to a MBC.
10-31-2014, 11:50 AM
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I'd have to dig around the garage, I'm sure I printed it and had it pinned to the wall at some point. Probably stuffed in my toolbox somewhere. It was a long time ago - I only ran it for a short while. Had a bad batch of zip ties, one failed and let the wiring under the hood fall down and hit the exhaust. Shorted the solenoid driver... so I went to a MBC.
10-31-2014, 12:11 PM
#12
10-31-2014, 12:35 PM
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raleighBahn -- Im hooked up exactly as your diagram shows but I don't have a muffler on the 3rd port. Do I need a muffler for this to work and what air is passing through the 3rd port when not energized?
Thanks
Thanks
10-31-2014, 04:22 PM
#14
Hey Teddy - not sure if you need a muffler, per se - I imagine mine has one so that the outside can get dirty/cleaned as opposed to inside. Take a look at my drawing - my scribbled sentences at the top. Energized you have boost going through the solenoid ports 1 and 2 to bolster the spring (ie building pressure in top part of my picture). De-energized, ports 2 and 3 are open, which lets all of that boost we built exhaust out to atmosphere and lets the spring fend for itself.
10-31-2014, 05:39 PM
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Thanks raleigh... I thought thats where the air would go. So the valve just diverts the pressure from helping the WG's spring to dumping the pressure to atmosphere out port 3. For some reason my valve doesn't allow pressure from port 1 --> port 2 to help the WG's spring. I have it connected as you do and neither energized or un-engergized effects the boost. Ill check out the solenoid this weekend. I'm staring to think its junk.