Attempting to bypass the electronic speed limiter involves modifying the PCM's programming, which is complex and potentially damaging to the car's drivetrain and other systems. This often involves:
* Tuning Software and Hardware: You'll need specialized software and possibly an interface (like a handheld tuner) to connect to the PCM and reprogram it. This process can vary depending on the exact PCM used in your specific vehicle. Incorrect flashing can severely damage the PCM rendering it unusable.
* Professional Tuning: The safest and most reliable method is to take your car to a reputable automotive tuner specializing in GM vehicles. They have the knowledge and tools to modify the programming safely and effectively, potentially adjusting other parameters like fuel delivery and ignition timing to optimize performance for higher speeds. They can also make sure the changes don't negatively impact the car's reliability or lifespan.
* Risks: Modifying the PCM's speed limiter carries several risks, including:
* Damage to the transmission: Pushing the car beyond its designed speed limits can overstress the transmission and other components, leading to premature wear and costly repairs or failure.
* Voiding the warranty: Modifying the PCM's programming will likely void any remaining factory warranty.
* Legal Issues: Driving at excessive speeds is illegal and dangerous. Modifying the vehicle to exceed speed limits doesn't make it legal to do so.
In short: There's no simple "remove the governor" solution. Increasing top speed requires sophisticated electronic tuning, which is best left to professionals. Consider the risks, legal implications, and potential damage before attempting this modification. If you're looking for increased performance, there are safer and more effective ways to achieve it, like improving air intake and exhaust systems, or other engine modifications.
