What to Tune First

[TAQuickness]

This is not the end-all-be-all bible to tuning. It's just 1 of 101 ways to tune that delivers consistant and repeatable results. As of late, I have read a few tuning books that reinforce this methodology.

1. IFR Table {B4001}: Very important that you start here and get this table right. You should use the IFR spreadsheet RedHardSupra made available on his website (or a similar one). This is the one known constant that you will base the rest of your tune on.
2. VE Table {B0101}: You will use the AutoVE tutorial to get this table dialed in. This will establish the base air mass model for your engine.
3. *Optional* MAF Table {B5001}: The same concepts you learn tuning the VE table with the AutoVE tutorial are to be applied to the MAF table.
4. Idle & Idle Transistion tables. Ironically, idle is the first thing your engine does and one of the last things to get tuned. An engine that won't idle is a frustrating driving experience - BUT, you must complete the previous steps to derive an accurate air and fuel mass flow model in order to achieve desirable idle quality. SSpdDmon has posted some great idle tuning information here
5. Spark Tables: You will need a load bearing dyno to accurately dial in your spark. Basically you just advace until you make no more torque/power then back off 2* for safety.
6. WOT: Best to do at the same time as your spark tuning to save on dyno $. In this case you will be adjusting spark & fuel to achieve maximum torque and horsepower.