1992 P30 7.4 / 4L80E M.H. Chassis

[uncabob]

This is what I was afraid of.

Don't let Yoda (Dave) scare you. I think he asked a question. You are already way up the learning curve. I was able to burn chips within a couple of days after getting an Autoprom from Moates. The real trick is knowing what, why, and how to change the data. Stick your toe in, the water isn't as cold as it looks. Bob

[dktool]

Don't let Yoda (Dave) scare you. I think he asked a question. You are already way up the learning curve. I was able to burn chips within a couple of days after getting an Autoprom from Moates. The real trick is knowing what, why, and how to change the data. Stick your toe in, the water isn't as cold as it looks. Bob

I do feel capable enough from the PC, mechanical and the logic side of it, I have written and done PLC programming for machine tools so in a lot of ways as you say, I am already way up the learning curve, but my main area of concern is exactly as you stated, "The real trick is knowing what, why, and how to change the data." Just finding a ADX file that would communicate with the TP software was a challenge as my ecm number was not shown on Moates support page and another source did not show it either. I first tried one that Moates suggested via email and it did not work so after reading a lot on this board and find some of Eagle Mark's ( R.I.P.) posts I tried the $85 file and it worked, it even had his name referenced in some of the sub tabs / edit windows. It was suggested that my ecm was a replacement unit, I know the history of this vehicle and am confident it has never been touched, it is: 16175071 I have not removed it to see what the prom or calpak(?) numbers are. Can the Burn 2 unit simply make an exact copy of my current chip then I can cut my teeth on that one trying to change the data ?

[dave w]

Can the Burn 2 unit simply make an exact copy of my current chip then I can cut my teeth on that one trying to change the data ?

Yes... http://support.moates.net/beginners-programming-chips/ ....The 27SF512 chip that Moates.net sells is 64K in size. $85 is 32K in size. You will need to use an "Offset" for the Burn 2 http://support.moates.net/programmin...using-offsets/ It's hexadecimal 32K = 7FFF and 64K = FFFF. dave w

[dktool]

Yes... http://support.moates.net/beginners-programming-chips/ ....The 27SF512 chip that Moates.net sells is 64K in size. $85 is 32K in size. You will need to use an "Offset" for the Burn 2 http://support.moates.net/programmin...using-offsets/ It's hexadecimal 32K = 7FFF and 64K = FFFF. dave w

I read those links, so far so simple. (haha) So the $85 file I have on my laptop contains all the operating perimeters for the ecm and I don't need to burn an image of my current prom ? Will I also need the bin or any other file or only the adx ? Then there is the question of instruction for finding the egr table and disabling it to prove the problem. Then, how to modify the trip point to something like cutting the modulation to a near zero percentage at the dead band trip point in hopes it won't pull the advance back with it. Also, I have no experience with the hexadecimal language so that also needs to be learned ! I have made my career by being self taught so if it's doable with only "virtual" teachers then, I'm in.

[myburb]

If it were me I would copy the chip you have in it now and use that as your starting point as that bin might have MH transmission settings that are different than bins you might gather from pickups or suburbans.

[dktool]

If it were me I would copy the chip you have in it now and use that as your starting point as that bin might have MH transmission settings that are different than bins you might gather from pickups or suburbans.

That was my thought too, I'm sure it has other functions that are not present in the smaller truck models such as gear ratio, decel speed fuel cut etc. This thing starts, runs and shifts like a swiss watch, it's just this one thing that make an already de-tuned Mark 5 emissions engine feel like dog, but only at that one point, through out the power band up to that, it pulls good. The fact that it is a P30 (P37) M.H. chassis is more than likely why it has this funky program. In all the searches I have done, the only ones that came up with this dead band comment were in RVs.

[dave w]

Then, how to modify the trip point to something like cutting the modulation to a near zero percentage at the dead band trip point in hopes it won't pull the advance back with it. Also, I have no experience with the hexadecimal language so that also needs to be learned ! I have made my career by being self taught so if it's doable with only "virtual" teachers then, I'm in.

The Hexadecimal information is for using Offset and for actual binary coding of the .bin file location / address (advanced class student stuff) The beginner can do very well without ever having to use Hexadecimal coding in the .bin file! Understanding Hexadecimal file size is needed for burning a chip with "offsets"..... Attached are some screen shots of the $85 transmission parameters and tables. I also included a screen shot of the Hexadecimal location in the .bin for $85, which is not necessary to know as a beginner! dave w

[dktool]

So, to be clear...... with the Burn 2, I would remove my prom, put it in the Burn 2, copy the image to my pc, remove the prom, put a new blank one in and upload / burn the saved image from my pc to the new chip. Is this correct ? Also, what is the function of the "calpack" module ? I see that the Moates chip adapter consumes the space where the calpack is.

[dave w]

Your $85 computer uses a Memcal, see my previous pics. Attached is a Memcal pic without the blue cover, showing the soldered in chip and knock filter board. To read the PROM chip from a Memcal I use the Moates.net HDR1 header http://www.moates.net/hdr1-memcal-he....html?cPath=64 which plugs into the Memcal so the Burn 2 can read the PROM chip.... Just a note, learn where the #1 pin is on a chip!!! http://www.evilmadscientist.com/2010...finding-pin-1/ dave w

[dktool]

Does that mean I'm ready for this;

(advanced class student stuff) dave w

If so, where do I enroll to get schooled on the VE tables and the rest of the fingers that make the hand work, or is it just seat of the pants trial and error to see what fingers get broken and which ones still bend ?

[LRT]

....

[dave w]

Does that mean I'm ready for this; If so, where do I enroll to get schooled on the VE tables and the rest of the fingers that make the hand work, or is it just seat of the pants trial and error to see what fingers get broken and which ones still bend ?

Not quite advanced class, but definitely INTERMEDIATE level. ... See attached 1227747 TBI ECM screen shots to get an idea of what to look for when tuning (your 16147060 PCM will be similar). BLM's are fuel corrections, used to determine if the engine is running lean / rich. BLM's below 128 are Rich and BLM above 128 are lean. Usually BLM's between 123 ~ 133 are acceptable. ... Adjustments to the Fuel Table (VE table) adding or subtracting fuel is what is changed to correct the BLM to an ideal 128. ... Check out the '7060 information in this gearhead-efi tread, http://www.gearhead-efi.com/Fuel-Inj...Information-85 and follow the links in that tread for more information. ... I use Excel spreadsheets to tune with because the data from a data log is very large and Excel is good tool to manage HUGE amounts of data. Open Office (freeware) is another tool available to manage HUGE amounts of data https://www.openoffice.org/ ... dave w