Tapout Tuning

LF4 Performance Tuning Specialists

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Tapout Tuning Keeps your Engine Safe

Making more power in your ATS-V is great, but what’s even better is when you can do it safely. At Tapout Tuning we know there are a multitude of factory settings implemented to ensure your LF4 engine is performing flawlessly and safe from damage. It is very important to us that those factory safety settings are still in place, even when your car is making significantly more power than when originally designed. Below we have outlined just a few of the things we do to keep your ATS-V safe when running our tune:

  1. We leave all Diagnostic Trouble Codes (DTCs) fully functional, except ones related to catalytic converters in cases where catless downpipes have been installed.  This allows your CHECK ENGINE light to illuminate and make you aware of any engine, transmission and/or sensor problems.
  2. We maintain OEM Knock Retard operation and settings.  This allows the ECM to reduce ignition timing in case of bad fuel, low octane, or other conditions where ignition timing is excessive.  Some tuners disable Knock Retard, and this can cause catastrophic engine failure.
  3. We maintain OEM fuel trim learning functionality.  This will allow your ECM to use feedback from the stock narrow band oxygen sensors to automatically adjust idle, cruise and part throttle air/fuel ratio for different atmospheric conditions, brands of fuel, etc.  Leaving fuel trim learning enabled will also allow the ECM to set a CHECK ENGINE light if something is wrong with your air/fuel ratio.  In fact, we set tighter limits than the factory, by using boundaries in the 15 to 20% range instead of 35 to 40%.  Some tuners disable fuel trim learning to mask improperly tuned mass airflow (MAF) tables.
  4. We leave DTC P228C enabled.  This allows the ECM to switch to Reduced Engine Power mode in cases where fuel rail pressure is less than desired for an extended period of time.
  5. We can set the electronic throttle to automatically close in case of excess boost.  This is recommended for anyone who really wants to push the limits with tuning.
  6. We can set the electronic throttle to automatically close in case of excessive post intercooler temperature.  This can be used as an intercooler failure ‘circuit breaker’ and is also useful in hotter regions and/or with drivers who thrash their cars exceptionally hard (i.e. half or standing mile racing, and/or repeated high-speed floggings).

This all adds up to a tuning company that is looking out for your car’s well being. These cars were meant to be driven hard, and with a Tapout Tune we provide you with huge power gains that are safe on and off the track.

Take a look below to see a recent scan from a customer who did repeated high speed runs less than a minute apart. By his fifth time the intercooler was no longer keeping pace, and the Tapout Tune automatically reduced boost as soon as manifold air temperature reached 148 degrees Fahrenheit.