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I actually have a large amp Stinger alternator, so it is not OEM.
What do you suggest?

Hi Russ. The gear ratio is 3.73, factory ratio.
OEM Tires: 275/55/20, 31.8" Diameter
New Tires: 275/60/20, 33" Diameter

What is RTT?

Any updates for us HP Tuners?

What year Tahoe are you working with? 2004 I assume by your signature...

What vehicle is this on?

There are no other files opened or being compared, no... We are viewing the main file, yes. Just the calculator fields are grayed out.

No help able to be provided? Please advise.

What are the difference in fan type? Discrete, PWM, etc...

Whats this about the "auto-tune" feature?

Hi. We have the Pro Version, but the box has inputs on the side of it.
I know how to hook them up, I was more curious about the benefits and ease of tuning after hookup...

Hey Guys. I am new to HP Tuners, as well as wideband O2 sensor gauges. I know there are inputs on the HP Tuner device, but nothing else. How do they work? How do you benefit from using them? Anyone...

Hey Guys. We are working with a unique project and would like to resolve our charging system issues. The vehicle is a 2007 Tahoe LTZ SUV with a GM LS7 7.0L engine and GM 4L80E transmission.

First...

Hey Guys. We are working with a unique project and would like to resolve our charging system issues. The vehicle is a 2007 Tahoe LTZ SUV with a GM LS7 7.0L engine and GM 4L80E transmission.

First...

Hey Guys. We are working with a unique project and would like to resolve our speedometer issues. The vehicle is a 2007 Tahoe LTZ SUV with a GM LS7 7.0L engine and GM 4L80E transmission.

First of...

Hey Guys. We are working with a unique project and would like some input and hopefully we can get all of our custom tune issues resolved... The vehicle is a 2007 Tahoe LTZ SUV with a GM LS7 7.0L...