Nate1647545505 Posted May 14, 2009 Report Share Posted May 14, 2009 The idea behind this comes from two things: -An AMS 1000 Boost Controller which can use a 0-5 volt input to build profiles (boost ramp rate & target psi) for different gears. -The majority of late model GM trans's having PCM Low Side (Grounded) control of the shift solenoids. The purpose of this circuit is to read the shift solenoid states and translate to a 0-5V output based on current gear. In other words: 1V = 1st Gear, 2V = 2nd Gear, 3V = 3rd Gear, 4V = 4th Gear. When used with the AMS1000, the functionality of tailoring how quickly boost comes on (Psi/sec) and what boost level (target Psi) on a gear to gear basis has been added. Cost to build: ~15$ for components (DigiKey) ~60$ Completed with ABS Box, Weatherpack Connectors & TXL Crosslinked S.A.E. J1128 External Wiring (Keefe Performance) Basic Schematic: http://img9.imageshack.us/img9/3637/ams10005vgps4t65egpss.jpg Notes: -This is setup for an AMS1000 input, different device inputs attached to Vout may require diodes depending on impedance. -This application is designed for a 4T65E transaxle, while other late model transmissions operate in a similar manner; please check your service manual operations section to confirm shift solenoid operation. -Vout is within + or - .1 Volt Quote Link to comment Share on other sites More sharing options...
boostedgtp Posted May 14, 2009 Report Share Posted May 14, 2009 Who the hell has a ams1000 and and 4t65e ???? Quote Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 14, 2009 Author Report Share Posted May 14, 2009 Who the hell has a ams1000 and and 4t65e ???? http://smiliesftw.com/x/shitbricks.gif Quote Link to comment Share on other sites More sharing options...
NTHER91 Posted May 15, 2009 Report Share Posted May 15, 2009 i can understand 3 whole words on that post now Quote Link to comment Share on other sites More sharing options...
fattyona12 Posted May 15, 2009 Report Share Posted May 15, 2009 i understood the red X Quote Link to comment Share on other sites More sharing options...
spankis Posted May 15, 2009 Report Share Posted May 15, 2009 I understood the majority of it, although it doesn't apply to me. It's for those futuristic cars with "computers" Quote Link to comment Share on other sites More sharing options...
Buck531 Posted May 15, 2009 Report Share Posted May 15, 2009 Nate, I have 4t65e and a blower. help me out! lol . Quote Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 15, 2009 Author Report Share Posted May 15, 2009 So the whole point of this is to keep traction in the lower gears? Yup, this being more OEM like, "hands off." There are time and shift based controls to accomplish the same goal, but for a slushbox street warrior, automated control based on gear position is a better option, IMO. e.g. Some turbos hit hard, with a huge change in torque in a very small amount of time. With some testing you can find a happy medium of bringing the boost on quickly without complete wheelspin: First gear may be only to handle 1psi/sec with a max of 4psi Second might take 4psi/sec and 10psi max Third & fourth hopefully takes 8psi/sec with a final setting of 15psi The new AMS software allows you to save different settings, so you can have a variety of profiles: street tires & pump gas, street tires & race gas, slicks & pump gas, and slicks & race gas. Quote Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 22, 2009 Author Report Share Posted May 22, 2009 If anyone needs a PCB for this, I have extras from the proto cut. Quote Link to comment Share on other sites More sharing options...
Main3s Posted May 22, 2009 Report Share Posted May 22, 2009 Wow... So this something you'll be doing, or are you just looking at the idea. I have to say it may be pretty helpful for launching the car. I understand the concept but not really the details of it. The geraing would be tied in with the amount of boost being run.? Quote Link to comment Share on other sites More sharing options...
Brandon Posted May 22, 2009 Report Share Posted May 22, 2009 Just the device we have been looking at! Nate I sent you a PM Quote Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 23, 2009 Author Report Share Posted May 23, 2009 Wow... So this something you'll be doing, or are you just looking at the idea. I have to say it may be pretty helpful for launching the car. I understand the concept but not really the details of it. The geraing would be tied in with the amount of boost being run.? We are going to try it. The logic makes sense but as they say, "One good test is worth a thousand expert opinions." The geraing would be tied in with the amount of boost being run.? That is the idea, with the AMS knowing what gear the trans is in, it knows how much and how quickly to apply it. If all goes well, there will be a second version which integrates the Bosh 5.3 traction control. This would allow the car to have a binary control of boost. On wheel spin, the system is designed to regulate (dump) boost using a PWM type valve to adjust the blower's built in bypass valve. However, since the car is turbocharged the system is unable to regulate boost. Using the AMS's reduction input and the PWM signal from the PCM a bridge can be created, restoring functionality back to the traction control system. Quote Link to comment Share on other sites More sharing options...
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