Need help tuning my calibration on a 0411 with road runner emulator using TunerCat.

[NISANDA]

Aksl, im NISANDA the one that send you the file, and its from a Silverado 2001 with the 5.7 vortec not a Express Van, in mexico there made 5.7s with the gen3 411 PCMs.

The file i send you its all parameters Stock (air,fuel,timming etc) except for Vats delete, Rear 02, EGR, EVAP,Cats and air pump delete. (the basic for start up swap).

This file i attach its basically the same but with idle adjustment to get you closer to you cam, some timming added and some more parameters adjusted to get you closer, try it and do a compare with the stock base file to see what i tweak in it.

Hope it helps.

[Aksl]

Aksl, im NISANDA the one that send you the file, and its from a Silverado 2001 with the 5.7 vortec not a Express Van, in mexico there made 5.7s with the gen3 411 PCMs.

The file i send you its all parameters Stock (air,fuel,timming etc) except for Vats delete, Rear 02, EGR, EVAP,Cats and air pump delete. (the basic for start up swap).

This file i attach its basically the same but with idle adjustment to get you closer to you cam, some timming added and some more parameters adjusted to get you closer, try it and do a compare with the stock base file to see what i tweak in it.

Hope it helps.

Hello NISANDA, it is nice to hear from you again, thank you for the .cal file you have provided me earlier, and great thank you for the update, really appreciate!
I will compare the files today, to see and learn the difference, i will as well be going to my truck today, and going to test it, will try uploading the updated .cal files, will see yours, and as well will compare the .cal that i have udated with Fast355's help...

Thank you very much for your help!

Sincerely!

[Aksl]

What cables are you guys using for data logging, is there any special feature, or chip, or is it just with support for "J1850 VPW" standard and thats all?

[Aksl]

I will be going to my truck today, will try to upload the newly made .cal files i have, and will report up on the result tonight. It`s -20ºC today, but with pedal applied by ± 20% the truck starts no problem at even lower tempreture.

[Aksl]

Hello everyone, so i have been to my track today, unfortunately it is parked a bit away from my home, and is parked outside. So it is a bit challenging to work on it every time, not always I’m able to get it in the garage, because most of the times the garage is busy, working on other cars, but anyway, i only could get a few turns and startups of the engine with new uploaded calibrations, because battery died, so i putted it to charge and will go again one of the next few days, and will report.

From these few startups i have done today, well, i uploaded NISANDA`s .cal, it started up with me applying the pedal a bit, couldn`t hold idle by itself, but from what i noticed it didn`t work very stable even applying the gas pedal, it cranked and misfired a bit, and there was no stability during idling, on both .cal`s the updated by NISANDA, and the NISANDA`s file i have been updating with help of FAST355. In fact it worked more stable with the other .cal i have in the beginning of the thread. And FAST355 was absolutely correct, i have remembered where i got that startup .cal file from, it is the "02 ExpressVan 5.7 4L60 DBC stock .cal" that i have downloaded from this thread : http://www.gearhead-efi.com/Fuel-Inj...ibration-Files, #4 message by Lextech, it is the stock 02 Express Van 5.7 4L60 base calibration. So i guess i will have to work with that calibration since it has more stable idling. I tried to compare the calibrations of Lextech stock 02 Express Van 5.7 4L60 base .cal, and NISANDA`s, but TunerCat brings a message that the files are different and can`t be compared.

I have got the scanXL with ELM327 wire now, so i will do some logging next time i go to work on my truck, unfortunately could not do that today due to battery that died on me, will do the logging with all .cal files i have. Hope that will bring some understanding of what is happening with the engine while being fired up idling with each of .cal files i have, hope you guys can give me a hand and help me to analyze the logs and .cal files, to understand where the changes are needed to be made.

[Fast355]

Hello everyone, so i have been to my track today, unfortunately it is parked a bit away from my home, and is parked outside. So it is a bit challenging to work on it every time, not always I’m able to get it in the garage, because most of the times the garage is busy, working on other cars, but anyway, i only could get a few turns and startups of the engine with new uploaded calibrations, because battery died, so i putted it to charge and will go again one of the next few days, and will report.

From these few startups i have done today, well, i uploaded NISANDA`s .cal, it started up with me applying the pedal a bit, couldn`t hold idle by itself, but from what i noticed it didn`t work very stable even applying the gas pedal, it cranked and misfired a bit, and there was no stability during idling, on both .cal`s the updated by NISANDA, and the NISANDA`s file i have been updating with help of FAST355. In fact it worked more stable with the other .cal i have in the beginning of the thread. And FAST355 was absolutely correct, i have remembered where i got that startup .cal file from, it is the "02 ExpressVan 5.7 4L60 DBC stock .cal" that i have downloaded from this thread : http://www.gearhead-efi.com/Fuel-Inj...ibration-Files, #4 message by Lextech, it is the stock 02 Express Van 5.7 4L60 base calibration. So i guess i will have to work with that calibration since it has more stable idling. I tried to compare the calibrations of Lextech stock 02 Express Van 5.7 4L60 base .cal, and NISANDA`s, but TunerCat brings a message that the files are different and can`t be compared.

I have got the scanXL with ELM327 wire now, so i will do some logging next time i go to work on my truck, unfortunately could not do that today due to battery that died on me, will do the logging with all .cal files i have. Hope that will bring some understanding of what is happening with the engine while being fired up idling with each of .cal files i have, hope you guys can give me a hand and help me to analyze the logs and .cal files, to understand where the changes are needed to be made.

I bet the Mexico truck uses the 85mm LS MAF. Do a comparison between the two. Update the MAF frequency vs flow table to the Vortec van one.

I do not see how more airflow, more idle speed and more timing around idle would not have a positive effect.

[Aksl]

Thank you Fast355, since i can not do a comparison in TunerCat, but hopefully TunerCat let`s you print data to .txt or via printer settings to .pdf and compare it, i will compare all tables between the Mexican Truck calibration & Express Van, and will report.

Sincerely.