questtuner82 Posted July 20, 2015 Report Share Posted July 20, 2015 Just curious has anybody ever tried using a ford maf sensor on a quest? Just splicing it directly to our harness? A person i know has a d50 that has a turbo g54 using quest computer with no translator and a maf sensor from a 5.0 mustang. Link to comment Share on other sites More sharing options...
importwarrior Posted July 20, 2015 Report Share Posted July 20, 2015 can you get a wire pin out for it?that could help others if you can get that info. Link to comment Share on other sites More sharing options...
questtuner82 Posted July 20, 2015 Author Report Share Posted July 20, 2015 Got the maf info for the ford one he used. It is for 96-99 4.6 or 5.4ltr motors. The older ones dont have a iat sensor built in but could be used with a translator like the gm maf. The newer style can be wired in directly with no translator. But requires more fuel pressure and bigger injectors to get rid of lean issues. The ford maf flows approx 30% more than a 1g maf. Also the ford mafs are labeled either with letters or numbers but they are the same pinouts. A=1 and so on. A is iat sensor signal, B is iat signal return, C is maf sensor signal, D is maf signal return, E is ground, F is pcm power switched power. So guys when u take a look at this tell me if u think it will work. The guy i know that is using this has an adjustable rr fpr running at 45psi idle and uses fic 950/1350cc injectors. He also runs a 70a/r turbo at 22psi with ext w/g and bov. Link to comment Share on other sites More sharing options...
importwarrior Posted July 20, 2015 Report Share Posted July 20, 2015 Jimmy, the 87's are the same as the 88/89's, the 86 is unique. the 87 is this: (I'VE NOW ADDED COLORS TO THE CHART) AND EDITED THE DECRIPTIONS FOR THE 87. THESE ARE STRAIGHT OUT OF AN 87 MANUAL FOR THE 5 SPEED ANALOG GAGE MODEL (WIDE BODY). 87 TSI “A†connector: W 1: IGN â€" (coil)WB 2: AFSLR 3: Motor position SWB 4: GNDGR 5: air Intake tempYG 6: Coolant tempYR 7: Idle SW 8: n/c 9: n/cGR 10: +5 volt powerW 11: O2 sensorYB 12: ISC â€" (in)YB 13: Ignitor advanceLY 14: MPS GROUND backupGW 15: TPSBW 16: Barometric sensor 17: n/c 18: n/cLgB 19: Speed (coil)RG 20: secondary air (catalyst)BR 21: Diag. OutputWR 22: control relay (fuel pump)YL 23: ISC + (out) 87 TSI “B†connector: R 1: IGN +12 VB 2: GNDB 3: GNDRW 4: EGRBY 5: IGN START(cranking)BW 6: AC switchR 7: IGN +12 VBY 8: GROUND YG 9: Boost gageYB 10: Injector 1 (primary)BR 11: Ignitor signal FOR INJECTOR TIMINGYL 12: injector 2 (secondary)B 13: +12 V CONSTANT Link to comment Share on other sites More sharing options...
importwarrior Posted July 20, 2015 Report Share Posted July 20, 2015 I believe they are the same as the 86, if so, here it is: 86 TSI: “A†connector 1: IGN â€"2: AFS3: n/c4: GND (AFS)5: Intake temp6: Coolant temp7: Idle SW8: Motor Position SW9: Pressure to gage10: +5 volt power11: O2 sensor12: Ignitor signal13: n/c14: n/c15: TPS16: n/c17: Intake temp (OVCP)18: n/c19: speed (coil)20: n/c21: Diag. Output22: control relay (fuel pump)23: secondary air (for catalyst)24: pressure solenoid 86 TSI “B†connector: 1: +12V2: GND3: GND4: EGR5: IGN (cranking)6: AC relay7: +12V8: Inhibitor9: ISC + (out)10: Injector # 111: ISC â€" (in)12: Injector # 213: +12V backup Link to comment Share on other sites More sharing options...
questtuner82 Posted July 21, 2015 Author Report Share Posted July 21, 2015 So would it be possible to run the ford mass air flow sensor without a translator like yhe guy i know is running in his d50 with g54 and quest computer? Link to comment Share on other sites More sharing options...
importwarrior Posted July 21, 2015 Report Share Posted July 21, 2015 one way to find out...try it.another idea i saw was to hook an adjustable Rheostat or Potentiometer to vary the voltage and be able to adjust it. Link to comment Share on other sites More sharing options...
scott87star Posted July 21, 2015 Report Share Posted July 21, 2015 Ah, you got issues here. Ford 5.0 MAF sensors are 0-5V output, the GM and Starquest MAF's are frequency output. They are not compatible. Ford MAY have changed the late model MAF to frequency based but I doubt it and I seriously doubt "the guy I know" story. Sorry. Link to comment Share on other sites More sharing options...
StarquestRescue Posted July 22, 2015 Report Share Posted July 22, 2015 I believe this piggy back system uses ford sensors. https://splitsec.com/product/arc2-a/ What happened to the carb conversion? Link to comment Share on other sites More sharing options...
questtuner82 Posted July 22, 2015 Author Report Share Posted July 22, 2015 Sq rescue, the carb conversion is underway. Decided on making an intake from scratch and using a 650 hp series blow through holley with mechanical secondaries instead of boost reference secondaries. Also going with a msd ignition box and a holley hp electric fuel pump with holley boost reference fpr. I think with the motor the way it is will handle 30psi of boost and i know the garrett gt35r will supply the boost no problem. Only thing im not sure about is if i should use my big intercooler or not as my buddys camaro carb and intake gets frost on it from such a cold air charge with the intercooler. Link to comment Share on other sites More sharing options...
Recommended Posts