Frequently Asked Questions
Have questions about tuning your Toyota or Lexus? Here are answers to some of the questions we hear most often.
Know Before You Tune
From warranty questions and fuel requirements to software updates and drivability improvements, we want you to know exactly what to expect before your appointment.
Common Tuning Questions
Straightforward answers about what an OTT tune does, what your truck needs, and what you can expect.
Will this void my warranty?
Your vehicle’s warranty is not automatically voided by an Overland Tailor Tune (OTT) or other aftermarket modification.
A dealership may deny a warranty claim if it can demonstrate that the tune directly caused the failure of the specific component being repaired.
For example, if an engine or transmission component fails and the dealership can establish that the tune caused the failure, coverage for that particular repair may be denied. An unrelated issue, such as a problem with the infotainment system, would not normally be related to the tune.
What are the major improvements to my truck?
OTT tuning focuses heavily on improving the way your vehicle responds and drives in everyday conditions.
- Improved performance and drivability
- Smoother shift points
- Reduced gear hunting
- Reduced throttle lag
- A more linear power curve
- Multiple throttle sensitivity options
Can my speedometer be calibrated with tuning?
No. Our tune does not recalibrate the speedometer. However, aftermarket solutions are available for speedometer correction when tire size or gearing changes affect the indicated vehicle speed.
Does my engine or transmission ECU software need to be updated?
We will verify your vehicle’s software version before tuning.
If an applicable Toyota software update or Technical Service Bulletin update is required, we will update the vehicle’s software at no additional charge before completing the tune.
What type of fuel is required with this tune?
- Naturally aspirated vehicles can use 87 octane or higher.
- Vehicles are not designed to operate on 85-octane fuel.
- Supercharged applications require 91 octane or higher.
- E85 is currently not supported.
- Ethanol-free gasoline can be used.
Do you tune vehicles from other manufacturers?
No. Kentucky Truck Tuning specializes in select Toyota and Lexus vehicles.
View Supported Vehicles & PricingWe’re Happy to Help.
Every vehicle and build is a little different. If you have a question about your specific Toyota or Lexus, send us a message and we’ll help you determine the best option.