I'm hoping someone can help me. I am helping a buddy with his 68 firebird. He has put a 2005 ls1 and trans into his 68 firebird. He has an autotap from 3 years ago, we hooked up and can see the error codes... but we need to eliminate these codes. What software do we need to get rid of these codes? Also, ss there a file we can get to reprogram or flash with?

ANY HELP would be GREATLY APPRECIATED!