Please note: this info is pre-2012. Sorry, we do NOT have any updated info. We have never tuned anything ever. We recommend talking to a tuner for more current information.
EFILive® now includes a list of those mysterious $???? error code that pop up on occasion, you can find them at:
Start => All Programs => EFILive® => V8 =>
Documents => EFILive® Error Codes
Here you will find 31 pages of EFILive® error code information.
Maybe you knew this was there already, but maybe you didn't. If you didn't, now you DO!