Flowmaster Flow FX Muffler 1978-pontiac-firebird-formula-esi2026215 Available for virtually all of

Available for virtually all of today's top selling vehicles

The controller and app are both programmable with user-defined presets

Securely mounts a 5-way flat connector socket

while gaining added height and performance

Wiring Accessory Kit

Flowmaster Flow FX Muffler 1978-pontiac-firebird-formula-esi2026215 Available for virtually all ofFlowmaster's Flow FX series mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the "chambered" muffler sound. With a 3. 0 inch inlet and outlet size and a 6 inch diameter body, this muffler is a great choice for large displacement gas engines. The interior features a large 3. 0 inch "straight through" stainless steel perforated core, surrounded with high temperature sound absorption