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12-24-2019, 03:57 PM
Jeepers who have to pass emissions tests usually know that exhaust modifications downstream of the catalytic converter are allowable as long as the vehicle stays within acceptable sound levels. Tailpipe fumes should obviously be routed away from the passenger compartment, but muffler locations and pipe-routing generally aren’t subject to emissions constraints. When the catalytic converter
More... (http://www.fourwheeler.com/how-to/engine/1912-50-state-legal-walker-jeep-catalytic-converter-swap)
More... (http://www.fourwheeler.com/how-to/engine/1912-50-state-legal-walker-jeep-catalytic-converter-swap)