-This Sticky is a consolidation of useful discussions and Tuning docs that have been brought up over the years. As new information is added I will update the Date in the thread title.

-If there are any topics you wish to discuss or think should be added to this post feel free to post up This sticky should be here to serve the tuning community, so should contain what YOU want to see/discuss

FAQ
If I reset my PCM/Disconnect my Battery/Battery goes dead will I lose my tune?
---Nope... your tune is stored in flash memory... only way to lose it is if you reflash your PCM. It may idle poorly at first while the car is "relearning" how to idle however. This should only last a few minutes.

I have an SES light. Can I disconnect my battery/pull the PCM fuses to reset it, and then pass OBDII Emissions?
---Usually no... once you reset the PCM (wether by removing power or clearning w/a scanner) the PCM sets the readiness codes to "not complete" for the various emissions tests. You need several driving cycles usually (hot and cold starts) before the readiness tests will complete.

What's the best Tuning software for me?
---The best is a personal decision. Here is some info that will help you decide.

Important Part Numbers:
Bosch LSU4.2 Wideband O2 Sensor (sensor only, replacement for bad LSU Sensors): 021-906-262-b



Quick Links:

--EFILive Tune Repository
--EFILive Website
--EFIlive Forum

--HP Tuners Tune Repository
--HP Tuners Website
--HP Tuners Forum


Learning to Tune:
--Predator Tuning 101
--How did everyone learn to tune?

Fuel Trim Cells:
--Fuel Trim Cell Discussion

Injector Tuning:
--Tuning SVO Injectors
--Injector Scaling Calculations
--Injector Duty Cycle Calculations

MAF and VE Tuning:
--How the MAF Works
--MAF Table Tuning (Dialing in the MAF Table)
--Engine Modes and how they Work
--VE Table Cracked!
--VE Table Tuning -- Now Hesitation when driving
--Tuning VE via fuel trims
--Advantages and Disadvantages of SD (Speed Density) Tuning

Torque Converter/Shifting Tuning
--Torque Converter locks/unlocks after larger converter install -- FIX

Idle Tuning
--Stop drilling those Throttle Bodies!
--Idle Operation Part 1
--MAF and Running Airflow Tables

Diagnostics/Troubleshooting/Other
--Service Engine Soon (SES) Lookup and Diagnostics
--Detailed Diagnostic Information
--GM Driving Cycle (Completing OBDII tests)
--IAT vs Resistor vs Reported Temperature
--LC1 Configuration , Wideband AND Narrowband Installation
--Wideband Logging using HP Tuners and your EGR Wires
--Wideband Logging using HP Tuners w/out EIO
--How does the BOSCH LSU 4.2 work?

 

this is an awesome collection of information. definitely sticky worthy!!

 

Horist you're my hero. <3

 

Finally! Very nice. Thank you.

 

Thank you for your efforts!

-franklin

 

Thanks horist!
This was one of the most exciting threads I'd ever read ->VE Table Tuning -- Now Hesitation when driving.

NoGo and ChrisB - nuff said.

 

Looks Awesome! Thanks!

 

Nice. The forum looks much better all cleaned up!

 

horist - can you include gameover's "Idle Operation Part 1" thread? It includes Part 2, also. Thanks.

-> https://ls1tech.com/forums/showthrea...3&page=1&pp=20

 

This might help as well. It takes the thread above me and puts it into a spreadsheet format. Determines the Running Airflow Tables

MAF and Running Airflow Tables

Included now in the help file Bill.

 

What PID's do you need to log for your spreadsheet?

Bill

 

Edited my above post to include a updated sheet with a help file.

 

hey, could you link to http://www.allmod.net/hpt/ officially? that's where my MAF calibration stuff is, which i know is linked in txhorns' thread, but it's kinda buried.
thanks

 

Awesome info.... Thanks for getting this info together.

 

added Silverhawk_02TA's VE tuning page... thanks

 

Thanks Silverhawk_02TA. It looks good. I am going to be giving it a try this weekend.

Bill

 

Added
https://ls1tech.com/forums/showthread.php?t=306296

for Injector duty cycle calcs

 

The link for "Idle Operation Part 1" in the lower section (not the top one) is broken. Top link works fine.

Thanks so much for putting this together, it's been really helpful.

Bad30th

 

thanks, fixed the link

 

Title: Tuning 101
Description:Tuning Documentation for Newbs. Contributed by james99ws6 and contains information from many enthusiasts
Purpose:Newb tuning assistance
Location: https://ls1tech.com/forums/pcm-diagnostics-tuning/284479-finally-how-tune-101-a.html
Quick Jump: http://www.transamws6.net/HPTuners/ls1tuninginfo.doc
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Title: HP Tuners .bin file Repository -- Search for bins , upload your own bins!
Description: Provides access to hundreds (175 at last count) of .bin files for your viewing pleasure.
Purpose:Tuning aid, view what others have changed and learn from them
Location:
https://ls1tech.com/forums/showthread.php?t=190486
Quick Jump: http://www.horist.com/hptuner/
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Title: MAF Table Tuning (Dialing in the MAF Table)
Description:Useful information on dialing in your MAF tables.
Purpose:Tuning your MAF readings to match actual air entering the engine
Location: https://ls1tech.com/forums/showthread.php?t=256989
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Title: VE Table Cracked!
Description:Contains many valuable mathmatical and theoretical formulas, discussion, and documents about the Volumetric Efficiency Table
Purpose:Volumetric Efficiency Discussion
Location: https://ls1tech.com/forums/showthread.php?t=149741
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Title: VE Table Tuning -- Now Hesitation when driving
Description:Further Discussion on VE tuning and how to fix hesitation issues via tuning
Purpose:VE Tuning and hesitation fix
Location: https://ls1tech.com/forums/showthread.php?t=84933
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Title: Torque Converter locks/unlocks after larger converter install -- FIX
Description:How to fix when an aftermarket Torque Converter will not stay locked
Purpose:Torque Converter Lockup Fix
Location: https://ls1tech.com/forums/showthread.php?t=162767
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Title: Stop drilling those Throttle Bodies!
Description:Discussion on achieving quality Idle w/out drilling your Throttle Body and without Computer Tuning
Purpose:Idle Characteristics
Location: https://ls1tech.com/forums/showthread.php?t=177230
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Title: SES Code Lookup
Description: Several sites for looking up Service Engine Soon lights
Purpose: Code lookup and diagnostics
Location: https://ls1tech.com/forums/showthread.php?t=209783
Quick Jump: http://www.obdii.com/codes.asp
Quick Jump: http://gearchatter.com/
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Title: Detailed Diagnostic Information
Description: GM LS1 Information PDF file
Purpose: Interesting read describing the various sensors and how they work...
Location: https://ls1tech.com/forums/showthread.php?t=103710
Quick Jump: http://www.hsvdriversclub.co.uk/ls1.pdf
Quick Jump: http://www.transamws6.net/HPTuners/holden_ls1.pdf
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Title: Fuel Trim Cell Discussion
Description: Discussion of conditions required to enter certain fuel trim cells (FTCs)
Purpose: Discuss and explain Fuel Trim Cell mappings
Location: https://ls1tech.com/forums/showthread.php?t=125583

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Title:Idle Operation Part 1
Description:Discussion of Idle operation and Idle tuning. Special thanks to Gameover of HP Tuners for sharing this very useful information.
Purpose:Idle tuning
Location: https://ls1tech.com/forums/showthread.php?t=193103
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Title: MAF and Running Airflow Tables
Description:Excel spreadhseet for calculating MAF and Running Airflow Tables. Special thanks to Black02SS for this contribution.
Purpose:Compliments the Idle Operation Threads
Location: https://ls1tech.com/forums/showthread.php?t=290064
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Title: Predator Tuning 101
Description: Learning to tune with a Predator Handheld programmer
Purpose: Writeup on tuning with a diablo sports Predator
Location: https://ls1tech.com/forums/pcm-diagnostics-tuning/294713-predator-101-sticky.html
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Title: Guide to tuning VE via fuel trims.
Description: Writeup on VE tuning via the fuel trim tables. Special thanks to Silverhawk_02TA for taking the time to do this writeup.
Purpose: Dialing in the volumetric efficiencty table
Location: https://ls1tech.com/forums/showthread.php?t=304025
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Title: Injector Duty Cycle Calculations
Description: Writeup showing how to calculate Injector Duty Cycle.
Purpose: To determine how close you are to maxing your injectors. Rule of thumb is you don't want to be higher than 80%
Location: https://ls1tech.com/forums/showthread.php?t=306296
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Title: Injector Size Calculations
Description: Excel spreadsheet for calculating Injector Sizes
Purpose: To properly calculate Injector Sizes. Thanks to RedHardSupra for this file!
Location: http://www.transamws6.net/HPTuners/injectors.xls
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Title: Tuning SVO Injectors
Description: SVO Injectors are rated at 40psi , not 3 bar. useful info on tuning these injectors
Purpose: Assist with properly dialing in IFR tables w/cars running Ford Motorsports SVO Injectors
Location: https://ls1tech.com/forums/showthread.php?t=326601
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Title: GM Driving Cycle
Description: GM OBDII Driving Cycle.
Purpose: Following these instructions should cause all OBDII readiness Tests to complete.
Location: http://www.transamws6.net/HPTuners/gm_driving_cycle.txt
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