Blog - DDMWorks

2020 Polaris Slingshot introduced with Prostar 2.0L engine

2020 Polaris Slingshot introduced with Prostar 2.0L engine

David Michel1/20/2020Polaris Slingshot

2020 Polaris Slingshot


When Polaris introduced the new Prostar 2.0L engine and mentioned the horsepower numbers, they did sound really good, but we did see a pretty good reduction in peak torque from the previous 2.4L Ecotec. We were a little concerned that the new engine might be a little peaky and feel a little gutless while cruising around. However, once the new engine specs were posted on the Polaris website after the reveal, they also posted up the new transmission gear ratios and the new final drive ratios and that's when we started to notice some important changes Polaris made.

Once we saw the changes to the transmission gearing and final drive, it became pretty obvious to us that although the engine would make less torque, we were going to see a faster Slingshot.

To confirm this, we started the comparison by using one of the dyno's of the base 2.4L Ecotec GM has posted over the years that shows peak horsepower/ torque and their RPM's. We put that information into a spreadsheet, then multiplied the engine power by the gear ratios of the transmission, final drive and also factored in the rear tire diameter. We plotted all of those data points, for all 5 gears on a graph below in red lines. 

Supercharger vs Turbo

Supercharger vs Turbo

Dave1/18/2018Saturn Sky

This is one of the questions that come up a lot, the old turbo vs. supercharger debate. Technically, anything that forces more air into the engine then it would have ingested naturally aspirated is a supercharger. Superchargers that are driven off of exhaust gas through a turbine are technically called turbine superchargers, but more commonly just called turbos. All of the forced induction systems have the primary goal of forcing a higher mass of air into the cylinder, which when fueled correctly, generates higher cylinder pressures and more torque on the crank, which makes tires go up in smoke faster
High Flow Catalytic Converters and the P0420 engine code

High Flow Catalytic Converters and the P0420 engine code

Dave10/5/2014
High Flow Catalytic Converters and the P0420 engine code One of the more popular modifications that we sell and install here at DDMWorks is a high flow catalytic converter. Although newer cars produced in the last 10 years have had more efficient and better flowing catalytic converters then in the past, aftermarket catalytic converters can typically still outflow them. This better exhaust flow can yield more power from the engine and also on turbo cars, the benefit of faster response from the turbo.