“where did you find that table?” 2011 calibrated success, inc....

©2011 Calibrated Success, Inc. tuning_table_tree_format.docx www.calibratedsuccess.com

“Where did you find that table?”

This is one of the most common questions I see asked on any fuel injection tuning forum. Navigating the various tuning software packages on the market can be a daunting task for the beginner. As I often instruct my live training class students, the important thing is to know what you’re looking for before actually hunting. If you know that you’re looking for the table that describes fuel injector flow rate as it varies with rail delta pressure, you’re much more likely to know it when you see it. Even then, finding the exact table name or location may still be a bit of a “needle in a haystack” feeling until you become more familiar with a particular tuning system.

In my home training DVDs, students have the benefit of being able to stop, slo‐mo, and replay to see exactly where I opened a table. In a live class, I’m always happy to show where certain tables are buried as well. In a forum post, I often take for granted that people know where to go to find a certain table.

In an effort to help the community as a whole, I have compiled these general table location documents for your reference. Consider them a gift to the greater good, rather than part of an expensive training system. It’s still up to the end user to learn how to properly adjust any table shown here, but hopefully this will speed up your learning curve as you progress with your EFI tuning experiments and projects.

I have separated the tuning parameters in tree format by both software systems and major task that would require the adjustment of that particular table or variable. Keep in mind that not all years and ECUs have the same tables available. Some ECUs have more tables mapped by the software company than others and the OEM may add or change tables by model year, so what you see on one program may be slightly different on the next. If your ECU doesn’t have a table or value shown here, don’t panic. It just means that it either doesn’t exist on your particular controller, that the software company hasn’t mapped it, or that model year has a different label/name for the table. If you’re not sure whether a certain table should exist in your controller, your best bet is to contact their tech support group and ask for clarification.

Together, the tables and values pointed out here cover about 90% of most tuning operations. Getting these values right is the first step in any successful engine tuning exercise. Get these wrong and you’re likely to create problems down the road that may appear to be “driveability” or idle control problems, but are really just fundamental setup issues. For those of you with more experience, this document will serve as a refresher or handy reference. For those of you just starting on your tuning education, this should give you a great jump start and help avoid some of the stumbling around that comes with being new to calibration. The tables are presented in an order that if used will also help save you time and effort in the long run. Simply fixing these tables won’t get you to 100% on their own, but it’s a strong start. Good luck and happy tuning!

Greg Banish


GM Vehicles HPTuners Format Fuel Injector Changes

1. Injector Flow Rate 2. Battery Voltage Offsets 3. Short Pulse Adder 4. End of Injection (EOI) Target 5. Minimum Pulsewidth 6. Transient Minimum Mass Clip

Open Loop Fueling

1. Stoichiometric Ratio Definition 2. Forcing Open Loop 3. Base Fuel Table 4. Fuel Adders 5. WOT Enable Condition 6. WOT Air‐Fuel Ratio


GM Vehicles HPTuners Format

Airflow Modeling

1. MAF Transfer Function(s) 2. Force MAF Only 3. Displacement Scalar 4. VE Surfaces 5. “Virtual VE” Zones 6. “Virtual VE” Coefficients


GM Vehicles HPTuners Format

Spark Advance

1. High Octane Spark Table 2. Low Octane Spark Table 3. Air‐Fuel Ratio Spark

Adjustment 4. Idle Spark Table(s) 5. IAT Spark Adjustment 6. Catalyst Lightoff Retard

Setting and Controlling Idle Speed

1. Idle Speed Set point 2. Idle Airflow Set point 3. Spark Corrections for Idle

Speed


GM Vehicles EFI Live Format Fuel Injector Changes

1. Injector Flow Rate 2. Battery Voltage Offsets 3. Short Pulse Adder 4. End of Injection (EOI) Target 5. Minimum Pulsewidth

Open Loop Fueling

1. Stoichiometric Ratio Definition

2. Forcing Open Loop


GM Vehicles EFI Live Format

Open Loop Fueling (cont’d)

3. Base Fuel Table 4. Fuel Adders 5. WOT Enable

Condition 6. WOT Air‐Fuel Ratio



Airflow Modeling

1. MAF Transfer Function(s) 2. Force MAF Only 3. Displacement Scalar 4. VE Surfaces 5. “Virtual VE”

Zones 6. “Virtual VE”

Coefficients



Spark Advance

1. High Octane Spark Table 2. Low Octane Spark Table 3. Air‐Fuel Ratio Spark Adjustment 4. Idle Spark Table(s) 5. IAT Spark Adjustment 6. Catalyst Lightoff Retard

Setting and Controlling Idle Speed

1. Idle Speed Set point 2. Idle Airflow Set point 3. Spark Corrections

for Idle Speed


Ford Vehicles SCT Format

Fuel Injector Changes

1. Flow Rate 2. Short Pulse Corrections 3. Offset vs. Volts 4. Rail Pressure Corrections 5. End of Injection Timing

Open Loop Fueling

1. Stoichiometric Ratio Defininition 2. Forcing Open Loop 3. Base Fuel Table

(includes WOT)



Airflow Modeling

1. MAF Transfer Function 2. Load w/Failed MAF 3. Engine Displacement



Spark Advance

1. MBT Spark Table 2. Borderline Knock Table 3. Max Allowed Spark 4. Adders for Air‐Fuel 5. Adder for Air Temp 6. Adder for Coolant Temp 7. Idle Spark


Ford Vehicles SCT Format Idle Control

1. Idle Speed Set Point 2. Speed Adjustment for Temp 3. Idle Airflow Set Points 4. Deadband for Idle

Spark Correction

“where did you find that table?” 2011 calibrated success, inc....

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