|
Rpmextreme Performance Tune Information
Tuning for maximum performance used to be the exclusive
domain of experts with dynos. While there is no substitute for
knowledge and experience, a new wave of digital tuning tools
are making it possible to precisely tune any engine without
long and expensive dyno sessions. The key is to measure and
record the critical metrics- air/fuel ratio, long term fuel
trims, spark and knock retard, etc., make one change at time,
and then repeat the process.
Whether you're tuning a large-displacement muscle car, a
forced-induction sport car, or a drag-racing snowmobile, the
concepts are the same.
What can you expect from a high performance tune?
All PCM’s are tuned for your specific modifications and driving style. You can expect:
- Increased horsepower
- Increased torque
- Better throttle response
- Faster Racing Times
|
- Increased gas mileage
- Firmer & higher shift points
- Overall better drivability
- Better Towing
|
What does a high performance tune include?
The process includes tuning the vehicle under real world driving conditions. This allows us to adjust the computer’s calibration during various driving scenarios from normal driving to wide open throttle. In order to optimize the computer, the vehicle must be put through every type of driving condition, something a dyno can not duplicate.
Your tune will consist of the following changes depending on modifications to your vehicle and your driving style.
Optimize the air/fuel ratio, naturally aspirated engines are set at
~12.8 a/f at wide open throttle. Forced induction engines run at
~11.5 a/f under pressure/boost/wide open throttle. Most
Factory tunes set the a/f ratio very rich to allow the end user to run 87 octane and load the vehicle with weight exceeding the manufacturers load rating.
Increase timing throughout the RPM range and increase throttle response.
This is the process that increases torque and horsepower.
Factory Vehicles were set up to run conservative tables to ensure every vehicle can operate properly on 87 octane.
We modify the shift patterns
to make the vehicle feel more responsive and shift into the correct gear at the right time. We can also increase and decrease the shift firmness.
Torque management is the ability to lower torque output to the wheels. Which means that when you want the full potential of your truck to lay down the power
you need to remove some or all TM, The Factory tune pulls timing to reduce power. The effects of TM are hesitations between shifts, a short pause off the line, and reduced power when the pedal is pushed to the floor. We are able to
remove all or a percentage of torque management.
We can also remove the speed limiter, adjust for tire size and gear ratio, and remove any emissions devices not being used (ex: rear O2’s, catalytic converters, egr, etc.)
Please make sure your tires are up to spec and rated for a
higher speed before you raise the speed limiter, the factory
usually sets the speed limiter to the speed rating on the
tires. Also most states require emission systems to be
intact and working in all vehicles, please check local laws
before you remove any emission devices.
|
