TunerPro User Forum

Looking through the tables for the 16147060 (92 P30 in a motor home) I see two different tables, normal and performance, for TCC engage/release as well as Upshift/Downshift. What determines whether the mode is normal or performance?
Jim

Robert, That's an answer to what I've been trying to find for a long time. I do have the equipment to burn an EPROM but it's at home and I'll be on the road for another month. Also, my software is only good for hex machine code level programming so I will be at a disadvantage there. If I knew the ex...

Robert, Thanks for the formula. I couldn't figure out how to add an ADX using two input values but I plugged that formula into the microcontroller I'm using to monitor the engine and it came out that at steady 55 mph on level ground it had an injector duty cycle of 25%, just half of what I originall...

Robert, That appears to be correct about the injectors firing every reference pulse. At a steady state 55 mph, I see 7.3 msec time between ref pulses (2050 rpm)and on level ground approximately 3.7 msec base pulse width. As the vehicle starts to go uphill, the BPW increases to around 5 before the to...

ref 138.adx - I was watching the "async fuel" flag (offset 1C, bitmask 10) and it appeared to show "yes" when the fuel was cut off during downhill at cruise speed when the throttle position went to zero and the base pulse width went to zero. Does this flag only indicate when fuel...

I noticed that under high power conditions, the base pulse width can be a higher value than the time between reference pulses. Can I assume that once BPW is higher than TBRP that the injector is on all the time?

Thanks, Robert. My goal is to calculate fuel flow and gallons used. My thought is that I could add the async PW and the base PW, factor in the time between reference pulses and come up with a meaningful number. I noticed that when I stab the throttle quickly, the async PW drops to zero, but the base...

What is the difference between "Base Pulse Width" and "Total Asynchronus Pulse Width"? Is one of them the time the injectors are open?
JL

Eaglemark, Six_Shooter, Thanks for your help, I now have a working stand-along ECU monitor that displays all 59 data words. It is still a work in progress but the important part is working. Six_Shooter, from one of your posts it sound like you are interested in building some kind monitor as well. I ...

Thanks, guys. I downloaded the new files and will be looking through them. My bin file appears to be BAMS, according to the label on the ECU. I haven't figured out how to put an image in this forum so I'll just type the label in. SERVICE NO. 16147060 BAMS *86BAMSK430670717* One more question, though...

Six_Shooter, you hit the nail on the head! I've got a registered TunerPro RT that has been used sucessfully for my vehicle. (it's a 1993 motorhome on a GM P30 chassis with a 7.4L engine. Mask $85. I've used 138.ADX to monitor running values on the engine and 177.ADX to look at transmission values, a...

EagleMark, Thanks for the reply. I'm attempting to access the ECU with a microcontroller to read certain values like injector pulse width for fuel flow calculations. Do I simply send it that 5 hex character string to get it to respond? Or, does that $57 message length refer to the size of the reques...

I have a 16147060 ECU using a 138.ADX definition file. Looking at the file with Notepad, I see that the "Transmit Stream Send" Command1 is listed as "F4570100B4". Is that sent to the ECU as a string or 5 seperate hex values?

I have a motorhome on a 1993 P30 chassis. ECU 16147060 BAMS (what is the signifance of BAMS?), mask $85, 7.4L, 4L80E trans. I can connect and display data with TunerPro RT V5 using either 138 ADX or 177 ADX, 138 is mostly engine data, 177 seems to contain transmission data. Both were imported and co...