Here’s a hack that’s been around since the very start of the hot rod movement. Car exhaust flame throwers work by interrupting the spark to the engine. This dumps raw fuel into the exhaust system.

Your exhaust system is essential for fuel economy and the safety of your car, especially in winter. Speedy can help maintain ...

Use your car as a flowbench - measure exhaust backpressure to see where improvements can be made. Improve exhaust flow by changing dump pipes, mufflers, converters, and piping - reduce ...

Part of that solution might be found in completely removing the Valkyrie’s exhaust mufflers and giving the Cosworth-built V12 a real roar. The car is currently slated to bow in racing trim at ...