Quote Originally Posted by Zodiac View Post
Greetings,

I have own TBI - powered rigs (91 Suburban, 94 G20 van) for a decade and while I have loved the dependability I have only rally partaken in basic troubleshooting and maintenance and I seek to know more and to better understand the system and, modify/tune it myself.

The 215k mile 350 in my 94 G20 lost oil pressure and seized up. I will be installing either a used or rblt long block and am taking this opportunity to learn how to datalog and tune the system. I'd to mildly modify the engine with a Vortec 350 roller cam, perh apse a slight compresion bump along with simple TBI and exhaust mods to improve torque and pulling power. Nothing too crazy.

I have been looking at moates.net and a I like their AUD1 kit for OBD1 chip burning/tuning. I gather that Tuner Pro RT is a good software to use.

My ECM service number is 1616395 and the 4 - letter code is BJLK

I am still trying to understand ECM masks and BIN files and the lir relationship. Any help for this rookie is appreciate.
If memory serves me correctly that should be a $E6 mask although it could be a $OD.