From what we’ve heard from our customers throughout the year, a 1-2 mpg improvement is pretty common on gas vehicles and diesel vehicles will usually see an even better improvement, especially during towing we’ve had reports of diesel towing mileage improving from 12 mpg to 20 mpg, that’s an 8 mpg improvement! So, what do these mileage improvements mean in terms of dollars?Īs stated earlier, the spark timing for premium fuel will be significantly increased which will improve power and mpg even greater than the 87 octane tune. However, one of the side effects of having improved power in your vehicle will be that you will most likely see a gas mileage improvement. We frequently sell 20 year old tuners for $150+! What this means is that you can tune your vehicle today, drive around for a few years until you decide to get a different vehicle, then sell your tuner (after returning your vehicle to factory settings of course) and recover most of the initial costs of the tuner. In fact, looking at some of the tuners we first sold when we started in 2006 for $240, we’re still selling the exact same model for $180.

Some tuner companies will also alter torque management in their tunes which will result in a noticeable difference as well.The benefits to a tuner are huge and there’s really no negatives to having one.įirst of all, the value of these tuners is very stable.

Transmission settings are also altered such as shift pressure and speed as well as the shift points. The only difference between different octane tunes are the amount the spark timing is increased since higher octane fuels can handle higher spark timing without pre-detonation the tuner will increase the timing higher for those fuels which is the sole reason why you see better power numbers on 93 octane tunes vs 87 octane tunes. Spark timing is usually increased throughout the entire throttle range which will lead to increased power and throttle response. Odds are that if you’ve landed on this page you already know that a tuner is used to plug into the diagnostic port on your vehicle to remap the computer settings to optimize engine/transmission performance and usually fuel mileage as a result of that, but do you know how it does those things?įor fueling, the tuner will alter your wide open throttle air to fuel ratio for increased power (the cruise A/F ratio remains the same as stock for optimal fuel mileage/safety) as well as the conditions for taking the vehicle out of closed loop mode and into power enrichment mode. Well today, I’m going to explain what exactly a tuner does, what the benefits are, and the reasons why you’re crazy not to have one!I’ve gotten used to the question from friends and family when I tell them about my career “what the heck is a tuner?” In fact, I’ve gotten so used to it that I usually just tell people that I work for an e-commerce site selling auto parts to prevent the confusion from even beginning. If you’ve come to this page, you may already know what a tuner is and the benefits of installing one on your vehicle, but not everybody knows just how beneficial they are and what the heck they really do. We are proud to say that we have never hacked a tuner and therefore none of our refurbished tuners are at risk for this error, but it is definitely something you should be aware of when purchasing a used tuner from other online sellers – even though the tuner may appear to be in working condition at the moment, after an update it could be turned into an instant paperweight.Unfortunately there isn’t much you can do if you have a tuner that has been disabled, the only option Hypertech provides is to pay them $200 to reset the tuner back to working condition.

Hypertech tuner display