Exhaust system to open air — everything from the header back. Header-back systems are generally produced as aftermarket performance systems for cars without turbochargers. The Turbo-back (or turbo back) is the part of the exhaust system from the outlet of a turbocharger to the final vent to open air. Turbo-back systems are generally produced as aftermarket performance systems for cars with turbochargers. Some turbo-back (and header-back) systems replace stock catalytic converters with others having less flow restriction. Some systems (including in former time all systems) (sometimes nowadays called catless or de-cat) eliminate the catalytic converter. It is illegal and is against Federal
What Car? carry listings from other sources, dropping the 'Approved Used' branding. In October 2016, "What Car?" launched a new online car buying service called 'New Car Buyer Marketplace'. Built into the existing whatcar.com website, it lets readers buy discounted cars from dealers in their area who have signed up to a "What Car?" code of content. Users can add options, change trim and alter finance preferences to get a ‘live' price which dealers are committed to. "What Car?"'s 'Target Price' – a long-established recommendation of the most the magazine's mystery shoppers think someone should pay for a particular model – is