R/TErnie Posted July 26, 2012 Report Share Posted July 26, 2012 Is there an easy way to invert the Boost Control PWM output? 100% Duty Cycle in my maps is wastegate spring, and 0% is MAX boost. I'm plumbing my 3 port differently to accommodate for this for a temporary fix in open loop... but without the flow rate through 1-2 ports it will not perform well running it in closed loop. Ideas? Suggestions? Thanks as always. -Eric Urness Quote Link to comment Share on other sites More sharing options...
Simon Posted July 26, 2012 Report Share Posted July 26, 2012 Plumb it correctly is the fix. Also the type of solenoid will have an effect. Quote Link to comment Share on other sites More sharing options...
R/TErnie Posted July 26, 2012 Author Report Share Posted July 26, 2012 I had it plumbed correctly... MAC 3 port EBC solenoid. Port 1 to Turbo (boost source) Port 2 to top of external gate Port 3 vent (use sintered iron filter) Ports 1 and 2 are connected and is the designed direction of flow through the solenoid. Port 3 is a bleed port. To get it to work with the way the vipec controls I need port 3 to the top of the gate and port 2 to vent. I'm saying that a lot of people use the GM 3 port, AEM/MAC 3 port, Grimmspeed, etc. 3 port solenoids and they're all hooked up the same way I did it. I don't think everyone else is wrong... -Eric Quote Link to comment Share on other sites More sharing options...
Simon Posted July 26, 2012 Report Share Posted July 26, 2012 Port 1 to Turbo (boost source) Port 2 to top of external gate Port 3 vent (use sintered iron filter) This is the correct plumbing assuming you also have a line plumbed from the bottom of the gate to the compressor With it plumbed like this it should function correctly. What are you seeing that leads you to change the plumbing? Quote Link to comment Share on other sites More sharing options...
bsh Posted July 27, 2012 Report Share Posted July 27, 2012 So when solenoid is deactivated in software you see full boost? Quote Link to comment Share on other sites More sharing options...
lekonna Posted July 27, 2012 Report Share Posted July 27, 2012 I had it plumbed correctly... MAC 3 port EBC solenoid. Port 1 to Turbo (boost source) Port 2 to top of external gate Port 3 vent (use sintered iron filter) Ports 1 and 2 are connected and is the designed direction of flow through the solenoid. Port 3 is a bleed port. To get it to work with the way the vipec controls I need port 3 to the top of the gate and port 2 to vent. I'm saying that a lot of people use the GM 3 port, AEM/MAC 3 port, Grimmspeed, etc. 3 port solenoids and they're all hooked up the same way I did it. I don't think everyone else is wrong... -Eric thats a different setup that vems has on their page about the mac valve .. http://shop.vems.hu/catalog/high-capaci ... p-171.html connection1 = athmosphere connection2 = wastegate bottom. connection3 = MAP (manifold pressure) I just installed the same valve, with the way its described above, wondering now whats the deal Quote Link to comment Share on other sites More sharing options...
lekonna Posted July 27, 2012 Report Share Posted July 27, 2012 yep, with the connection wrote down it seems to work fine. Quote Link to comment Share on other sites More sharing options...
R/TErnie Posted August 22, 2012 Author Report Share Posted August 22, 2012 Problem solved. Was plumbed correctly and wired correctly... and wastegate dc doesn't need inverting. 17psi spring makes 22psi. I had to get the cahones to set the map limit higher... And higher yet. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.