Guides

Learn to tune
your LS.

Plain-English guides written for people tuning their own trucks and cars. No forum archaeology required.

Start here

How to tune an LS with your phone

From adapter to first flash: the complete workflow, step by step.

Read Fueling

VE table tuning from a datalog

Wideband or trims, how to log, how to correct and when to stop.

Read Safety

Read and back up your LS PCM

Get a full stock read before you change anything. Free.

Read Hardware

P01 vs P59: which PCM do I have?

The two Gen III controllers, how to tell them apart and why it matters.

Read Hardware

Best OBD-II adapter for LS tuning

What works on iPhone, Android and PC, and what does not.

Read Feature

Automatic corrections from logs

How TuneBench turns a log into table changes.

Read