I used DataMaster 8D - ODB1 to record the data on my 1991 Camaro Z28 with 305TPI.

There isn't much information on how to analyze the *.UNI file. Does anyone have experience with this program and analyzing the file format?

Any assistance would be greatly appreciated.

 

If someone has the TTS Datamaster 8D program. I have included the .UNI file zipped. Take a look at the file and let me know what you think.

Thanks

 

I have noticed that my STERM and LTERM have values lower than 128 which indicate that the mixture is rich, and the PCM is compensating by generating a negative correction factor. As noted in my data log.

Air-Fuel Ratio Inj BPW LTerm Adj LTerm-C MAP STerm-C
Ratio mS Counts Counts KPa Counts
14.73 1.36 116 108 40.6 116
14.73 1.36 116 108 40.6 116
14.73 1.36 116 108 41.0 116
14.73 1.37 116 108 41.0 116
14.73 1.37 116 108 41.0 116
14.73 1.37 116 108 41.0 116
14.73 1.37 116 108 41.0 116
14.73 1.37 116 108 41.0 116
14.73 1.36 116 108 41.0 116
14.73 1.37 116 108 41.0 116
14.73 1.36 116 108 40.6 116

I have 24lb injectors which is causing the rich condition. The duty cycles are not exceeding 80% so that leads me tuning my PROM according. Have search all over on what parameters to adjust for this.

Any assistance is greatly appreciated.

 

24#/hr on a stock tuner 305 will be rich. First thing to change is the injector flow rate (in the calibration). Then if you can get the injector compensation values update the short PW and offset compensation tables.

That will get you 95% of the way there.

RBob.