By running pipes from the catalytic converter to the muffler and from the muffler to the exhaust tip, cat dpf delete pipe 6.7 cummins back exhaust systems improve exhaust gas flow, providing small performance boosts. However, your performance gains may be limited if your catalytic converter restricts gas flow, as a catback exhaust system is installed ‘downstream’ of the converter. Header-back systems are increasingly rare, namely because of modern emissions systems. Since removing your vehicle’s factory emissions components is highly illegal, the previous two options are more common. However, header-back systems are still available for some older, pre-emissions applications. In these cases, header-back systems offer more performance and volume than cat-back or axle-back systems
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5th gen OEM Toyota 4Runner Catback Exhaust Brand New auto parts by owner vehicle automotive sale craigslist
Timothy Alford edited this page 2 months ago