On3 Performance Base tune for 99 – 04 GT


3 in stock



Looking for affordable base tune for your 99 – 04 mustang gt with an on3 performance turbo kit? well look no further, StageFP now offers complete base tunes that are unlock and can be modified by you. This tune is designed for 7 – 10lbs of boost and running 56lbs or 60lb injectors running an upgraded intank pump on 93 pump. Tunes come preinstalled on a j3 chip and is plug and play compatible with most PCM versions out there. For more details or questions please email tune@stagefp.com


WARNING: This tune is sold AS A BASE FILE and does not come with tune adjustment support. Adjustments made by the end user is at there own risk and should be done a dyno or race track. It should never be done a public road.

Disclaimer: This software is not compliant with the California Air Resource Board (CARB) Any use of this software on California public roads is prohibited. This software is compatible with the options listed above any other modifications will require a charge for a custom tune. Dyno results were done with SAE correction factor and smooth level 5 on our dynojet 224x Results may vary from other dynos, weather or load conditions.

We DO NOT design tunes to defeat any of your emissions components. We are not in the business of getting your car ready to pass inspection