Looking for increased performance, better mileage and better sound out of your late model car, truck or SUV? Thunderstorm Exhaust Products are here to help!! For the 2015 and up Ford Expedition & Lincoln Navigator with the 3.5 liter Ecoboost, Thunderstorm Exhaust Products offers this true high flow, larger diameter downpipe set in both catted or non-catted verson.  Typical power gains are in the 10-15 HP range with improved throttle response, mileage and  better overall drive ability. These Thunderstorm Downpipes are made in America of T304 Stainless Steel and feature high flow racing catalytic converter and mandrel bends. All Thunderstorm Downpipes Products are designed to work best in conjunction with other  Livernois Motorsports exclusive products like MyCal tuners, Windstorm cold air intakes, Thunderstorm Catbacks, and Evenflo thermostats for the ultimate in easy, bolt on performance! If your interested in the best value see our Mail Order Packages!!! 

Want to learn more about each product line?

MyCalibrator Tuner

Thunderstorm Catback Exhaust

Windstorm Cold Air Intake

EvenFlo Thermostat

Note; All high flow down pipes require tuning [the MyCal tuners work best!] and are not EPA approved and as such they are for off road use only.