
This helped with the response on my truck, I use 87 octane and there is a special tune for it. There are also settings for 91 octane, a gas saver mode (not for towing), 87 octane and stock return. I checked out the HP tuners and they totally exceeded my expectations and budget. This worked for me as I could change my tire size and remember my speedometer. You can also use it to increase or decrease ignition timing, increase rev limiter or speed limiter. The idle adjustment is a handy tool when you are working on the engine yourself and want to keep it at a certain value. It will return to normal as soon as you exit this option. For the price I'd say it's ok, I thought I'd get a little more but that's ok.

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