I would love to take the car to a drag strip/autocross for some runs to see how it is currently running before I make any changes to it, but the changes may come first. 🙂 I don't think I've ever owned a car that I haven't made changes to... 

The changes I am going to be making to this one will consist of power upgrades, suspension/wheels/tires, and a few cosmetic items... just because. This section is about power... makes me what to make Tim Allen sounds. 

From the factory, the car will run 0-60 mph in 3.7 seconds, runs a 1/4 mile at ~12.5 seconds at 115-117 mph, and has a 189 mph top speed. When I'm done with my tinkering it should be 3.1-3.3 seconds 0-60, 11.2-11.5/125 mph 1/4 mile. It should see close to 150 mph in the half mile and I hope to find out at the "Heaven's Landing 1/2 Mile Shootout" in Clayton GA when they have it again.

There is certainly nothing wrong with the engine, it runs strong and pulls hard, so physically it will remain untouched. Breaking open an engine is not something I like to get into if I can avoid it. But every car needs more power, and this one is no exception, so there will be two changes made to bump things up. 

• Trifecta Computer Tune
• Borla CAT Back Exhaust

The Trifecta reprogramming of the engine computer yields tremendous gains in power and is the single most beneficial power modification you can do to these cars. Besides the power increase, there are additional features that enhance the transmission performance and the different driving modes that are available in the car. 

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With roughly 20 minutes to spare, you can reprogram your Cadillac ATS-V to drive and perform even better than it did from the factory. Without changing a single piece of hardware, you can bring your 464 HP sport sedan or coupe up to 600 HP** (380 HP up to 500 HP as measured at the wheels on a chassis dyno), and give it a more sport-inspired drive feel.

(** Estimated crankshaft horsepower based on calculated drivetrain losses)

Specifications of the TRIFECTA Performance MY2016--2019 Cadillac ATS-V 3.6L Twin Turbo (LF4) ECM software reprogramming:

• Gains of up to +111 ft-lbs and +121 WHP under the curve (and +73 ft-lbs and +114 WHP peak on 91 octane)
• Powertrain calibration has been tested and validated for various environments, such as cold/heat, elevation, and variations in fuel quality
• Power feels linear and immediately responsive (improved drivability and throttle attentiveness)
• Retains all GM OE diagnostics and ECM functionality
• Retains all OE error code reporting and functionality
• Emissions readiness checks are present; emissions compliant
• Maintains functionality of ABS and TC systems
• Knock detection mechanisms and OE engine knock detection sensitivity is retained
• The TRIFECTA flash loader and Transparency feature set does not increment the ECM write counter or increment entries in the flash history
• Return to stock functionality included with flash loader
• TRIFECTA Octane Adaptive MKIII feature set will bias for lower octane fuels (multi dimensional airflow knock zoning and timing decay tables, not just high/low)

Specifications of the TRIFECTA Performance MY2016--2019 Cadillac ATS-V 8L90 8-Speed automatic transmission TCM calibration software reprogramming:

• Supplementary 8L90 transmission TCM reprogramming compliments the ECM reprogramming and completes the TRIFECTA Powertrain Calibration: designed to work in unison with the ECM reprogramming for optimized performance
• Improved shift times in adverse shift patterns
• Improved shift logic (improved drivability)
• Does not shorten transmission life or increase cooling requirements
• Retains all OE diagnostics and TCM functionality
• Retains all OE error code reporting and functionality
• Improved fuel economy with improvements made to torque converter slip profiles

This is a dyno graph of the stock versus reprogrammed car.

The last power enhancing modification will be the exhaust. Keep in mind this is still a 6 cylinder motor, so not the same sound as a V8. But it could could sound a little better with a little less restriction while making a little more power. I think I'm going to go with the Borla CAT back system that uses 2.75" pipes and 4" tips. 
 

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Included in this system are Dual Mode Exhaust valves which add to the driving experience. System features a X-Pipe for improved performance and polished T-304 stainless steel tips for sharp appearance. BORLA® Cat-Back™ exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA® Sound of Power respected by motoring enthusiasts everywhere.

Each system is built from premium T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer-controlled CNC manufacturing ensures an accurate fit.

Best of all, BORLA® stands behind every system with a Million-Mile Warranty. Just what you’d expect from the world’s most experienced (and most winning) exhaust brand.

That's it though. Basically the motor is never opened or really touched at all. 🙂