C02 Boost Controller
01-29-12, 07:51 PM
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C02 Boost Controller
So been talking with a few people and hearing the Good Ol’ Profec B won’t be the boost controller of choice for 30+ Psi and I keep hearing Co2, now the only ones I see are the NLR AMS-500/1000, and the Leash2, the youtube video of the leash leads me to believe its going to take some trial and error to setup… 30 psi and up what do you run? I like the gear/multiple boost selections as I still plan to run on a 10.5 tire. I saw Anthony had a thread ages ago, but figured instead of raising the dead id throw it in here as a link https://www.rx7club.com/rotary-drag-racing-167/high-boost-boost-control-730354/
The NLR AMS http://ams1000.com/
http://www.leashelectronics.com/NEW-...ler-BL2011.htm
Video oF leash http://youtu.be/NZSMPeJs-I8
Any input appricated
The NLR AMS http://ams1000.com/
http://www.leashelectronics.com/NEW-...ler-BL2011.htm
Video oF leash http://youtu.be/NZSMPeJs-I8
Any input appricated
01-30-12, 09:24 AM
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The new PCS boost controller (option built into d200), now also allows you to use co2 if desired/needed. The previous version did not allow for use of c02 but not everyone uses c02. Brent Rau ran 80psi of boost with the old d200 software and no c02. And of course myself and Ken S both used the older d200 boost control option on our rotaries and have run close to 50psi.
01-30-12, 01:20 PM
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Didnt even know the d200 had that option. for the $ that just makes sense....since the AMS is 1k, i can get the d200 and boost controll for almost the same $
02-06-12, 06:28 PM
#6
I have not used CO2 controllers but it makes sense for a drag racing application. It is still pneumatic control but by having a dedicated source of air you have less factors to deal with. It's a more predictable flow of air into the actuator.
Here's something I wrote a while back after looking into the AMS controllers:
The AMS-500 and AMS-1000 boost controllers are definitely unusual designs. First of all, they are designed only for external wastegates. Like many external wastegate boost control plumbing configurations, they apply pressure to the top of the diaphragm (top wastegate port) inside the gate in order to help keep the valve closed. The side port of the gate receives dedicated manifold pressure and there is no T to the solenoid. I have used this type of plumbing before.
One solenoid applies pressure to the top port and another solenoid will vent it out. This may look weird but it is used in vacuum systems, automatic transmissions, and a lot of other hydraulic/pneumatic controls. For example, the ISC/BAC valve on the 1st gen 13B fuel injected Rx-7's actually has a vacuum solenoid and a vacuum vent solenoid kind of like that, rather than using a single duty controlled valve as on the 86+ 13B engines. The AMS solenoids themselves are the exact same style as the MAC solenoid used by AEM, Haltech, and Grimmspeed or the Denso solenoid used by HKS, Greddy, or Apex'i.
In terms of the controls for the AMS, they are different than anything else out there I've seen but still very simple. You set how much pressure will be applied to the top port of an external wastegate. This is how much pressure will be working against the spring; it is not a target manifold boost pressure that the engine will see. Once you set this pressure you can set what they call the "ramp rate" , which is basically how quickly the controller will try to achieve this target pressure working against the spring. The ramp rate is probably closest to a Feedback setting on other controllers. There really is no equivalent to the AMS 500/1000 "boost" setting. It is unique in that way. You have no direct control over the duty cycles for either solenoid and it doesn't seem to be intended for internal wastegates.
The AMS 1000 (not pictured above) seems to be aimed toward turbo motorcycles and has a lot of gear-based settings and a switchable output. It also uses an external MAP sensor which looks identical to the AEM MAP sensors and is probably a Delphi/GM part. Its basic control system is the same as the AMS 500 though.
Here's something I wrote a while back after looking into the AMS controllers:
The AMS-500 and AMS-1000 boost controllers are definitely unusual designs. First of all, they are designed only for external wastegates. Like many external wastegate boost control plumbing configurations, they apply pressure to the top of the diaphragm (top wastegate port) inside the gate in order to help keep the valve closed. The side port of the gate receives dedicated manifold pressure and there is no T to the solenoid. I have used this type of plumbing before.
One solenoid applies pressure to the top port and another solenoid will vent it out. This may look weird but it is used in vacuum systems, automatic transmissions, and a lot of other hydraulic/pneumatic controls. For example, the ISC/BAC valve on the 1st gen 13B fuel injected Rx-7's actually has a vacuum solenoid and a vacuum vent solenoid kind of like that, rather than using a single duty controlled valve as on the 86+ 13B engines. The AMS solenoids themselves are the exact same style as the MAC solenoid used by AEM, Haltech, and Grimmspeed or the Denso solenoid used by HKS, Greddy, or Apex'i.
In terms of the controls for the AMS, they are different than anything else out there I've seen but still very simple. You set how much pressure will be applied to the top port of an external wastegate. This is how much pressure will be working against the spring; it is not a target manifold boost pressure that the engine will see. Once you set this pressure you can set what they call the "ramp rate" , which is basically how quickly the controller will try to achieve this target pressure working against the spring. The ramp rate is probably closest to a Feedback setting on other controllers. There really is no equivalent to the AMS 500/1000 "boost" setting. It is unique in that way. You have no direct control over the duty cycles for either solenoid and it doesn't seem to be intended for internal wastegates.
The AMS 1000 (not pictured above) seems to be aimed toward turbo motorcycles and has a lot of gear-based settings and a switchable output. It also uses an external MAP sensor which looks identical to the AEM MAP sensors and is probably a Delphi/GM part. Its basic control system is the same as the AMS 500 though.
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