OBDII? Well, I'm looking at one file here which is 334 k. With OBDI efi you could get tied into over 2 thousand bytes of variables to play with. When carburetors ruled, there were perhaps a hundred variables to worry about on the most complex systems. So it's not likely for an author to focus on one software package. There are at least 4 companies that I can think of selling OBDII tuning software right now and no single one seems to be dominant. I don't believe I know Chris, but once upon a time I was on a couple of mailing lists with Keith and I can say he's one of the guys that can live on both the tuning and coding side of this game.ģ) You need to have specific instructions for the tuning software you are using. People who tune engines rarely speak ecm at the level of the software coders. People who write tuning software often aren't engine tuning gurus. ![]() This is probably the hardest part of the whole process to get correct. So many people are at so many different levels in this regard, where should an author start?Ģ) You need to have good information about the engine control system you're working with. There are probably 3 reasons why one book doesn't have everything.ġ) You need to understand the fundamentals of an internal combustion engine. It's mainly focused on aftermarket engine controllers, but he does cover a fair amount of basics. I have "How To Tune and Modify Engine Management Systems" by Jeff Hartman here in front of me. I have never seen any one book that handles everything. To do a good job of tuning you have to know a fair amount about different systems. If you want an HPTuners forum, well, go to the HPTuners forum. It's realistic to expect other companies to release tuners now that someone has done all the legwork to solve the lock/unlock issues and work out the software within the PCM.
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