Dyno tuning can be very beneficial for your car. Without changing a single part, but instead ensuring that everything works in harmony, you can extract mpre power from its engine.
That stands particularly true for cars that are modern enough so they can be tuned with a computer but are old enough to benefit from decades of advancements. Such is the case with this 2000 Dodge Viper GTS brought in for a dyno tune by the Four Eyes YouTube channel.
The car’s 8.0-liter V10 was rated at 450 hp (460 PS/340 kW) from the factory and, on the dyno in this video, that translated to 410 hp (416 PS/306 kW) at the wheels for this bone stock example. That’s not bad, but the tuners immediately noticed an area where improvements could be made.
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A torque dip was found that related to an area of the rev range where the car was running rich. With a little bit of trial and error, they found a way to keep the air/fuel ratio optimized and gained eight horsepower (8.1 PS/5.9 kW). Better still, the torque dip was ironed out.
From there, the tuners felt confident that they can advance the timing in order to allow more time for the combustion to occur. A small advancement allowed them to gain another 10 hp (10.1PS/7.4 kW), for a total of 428 hp (433 PS/319 kW).
Another advancement, plus an adjustment to the air/fuel ratio to account for the extra fuel requirements, resulted in a final power rating of 438 hp (444 PS/327 kW) at the wheels, or a total of 28 (28.3 PS/21 kW) extra horses without modifying a single part. And in the real world, that translated to an improvement of nearly half a second on a 30-80 mph (48-129 km/h) acceleration test.