User interface should be simple, one chart for fuel and timing, fuel is represented in A/F ratio and timing in -degrees. Timing would be pulled by 1* increments when selected and have a programmable knock Lean compensation map. sending a 12V or Ground signal to the auxiliary input to switch maps (toggle switch, water injection on signal or Nitrous trigger switch.). Auxiliary imputs would be used to switch maps for different grades of fuel or water meth or Nitrous. The controller would interrupt the coil pulse signal wire going to the coil and run a bypass relay, if the system has an error or shuts down Coil pulse goes straight from ECU to Coil and boost is cut to wastegate only psi. Lean condition and knock condition failsafes would be to cut boost or pull timing or run an enrichment map. 2- Locked in millisecond injector map with a rich correction factor selected in 0.5% increments. Wideband signal loss failsafes would be selectable. The controller would use coil signal (rpm) and map sensor voltage to chart a map and chase the 0-5V wideband signal with injector pulse milliseconds. I think it is possible to build and to program piggyback stand alone.Ī controller that can be used by anyone adding or upgrading a turbo on a single coil vehicle.Ī simple system that controls injectors based on air fuel ratio's instead of fixed maps based on RPM and manifold pressure.Ī controller that also pulls timing (advancing timing would be to complex) and allows for a quick switch 2nd map for water/methanol injection or Nitrous Oxide or. This requires using the serial out port to display Air Fuel readings or using MTX series gauge/controllers.īut honestly I am getting tired of adding relay's, pressure switches, toggle switches and LED warning lights to my build.Īlthough I like the idea of an A/F monitoring failsafe for the water/methanol injection system more than running an alcohol resistant, high pressure flow sensor/meter and running an arduino type controller to monitor and operate a boost cut failsafe. The following set up can be used as a fail safe for anyone running extra fuel and higher boost than the factory ecu and injectors will run at (above 15psi). In the advanced analog output settings the response speed may need to be changed and the Error output voltage should be set to 5V. This would allow for a water meth injection system failure failsafe by monitoring it's A/F results instead of it's cc per minute flow under operation. This is not possible on my current set-up because both analog outputs are used (Narrow band to ecu and DB gauge), however is possible with the XD-16 gauge that uses the LC-1 stereo port to give A/F readings, the LC1 Stereo port is not affected by changing analog output settings. Using a pressure switch to control the analog output to only send a signal above 25psi (water meth boost level) to a relay that cuts power to the water meth boost solenoid if A/F's go above 11. I like the idea of lean condition boost cut and decided to look at Innovate LC-1 settings to see if I could program one of the analog outputs to only put out voltage at a certain A/F, say 0V below 11A/f and only put out voltage above 11 A/F. Ripping off and simplifying the XIC lean warning set-up: It has barometric compensation setting and it can monitor a 0-5V wideband signal and give a warning or ad 25% fuel compensation when reading lean, It can also operated and regulate a boost control solenoid valve.īut it does not run off the wideband signal, it still uses fixed maps based on set-point and fuel gain, rpm and Map pressure. ![]() The XIC has been around for about 20years now, it has had some changes over the years and has a few neat features. UncleDirrt decided on the SDS XIC, it is the 2nd generation of the SDS EIC I have been using. With the exception of some model specific units like URD additional injector and timing conditioner for Toyota's (435$) or motorcycle devices like Daytona twin tec controllers (+- 250$).ĭiscussing fuel control with UncleDirrt I decided to look for anything new on the market. They all seem to lack features (fuel piggyback controllers don't do timing and Timing controllers don't do fuel) and they all cost too much. I have been running piggy back controllers on my cars for years.Īnd have looked into many types and brands.
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