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Re: HP Tuners tuning info
Get Banish's book. It is a great start to learning how the GM ECM's work and what to look for and change when tuning. The biggest thing it teaches you is how to set up a config to log the proper parameters of the engine. It then allows you to take that log and compare and modify the various settings in the ecm to get you where you need to go. A wideband is really essential to do it correctly and most efficiently.
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