Ls1 Flash Tool [updated] 90%

Software (like TunerPro) used to actually open the .bin file and change the ignition timing, fuel maps, and speed limiters. Conclusion

For those with very early LS1s or the preceding LT1 engines, hardware modification tools exist. These are generally for the hardcore hobbyist who wants to modify the raw binary files rather than use a modern GUI. Not recommended for beginners. ls1 flash tool