Quote:
Originally Posted by Rawknees'Turbo
Nope, that is not how the 930 air pump worked (did not dilute the exhaust gasses). Injecting air into each exhaust manifold port raised the exhaust system temperature and helped to burn of unburnt, wasted fuel in the exhaust (something that the 930, K-Jetronic fuel system is notorious for), and with models that had catalytic converters, an air pipe was hooked to those, and the additional air supply from the pump increased the temperature of the catalyst and helped its operation.
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Thanks, learned something today.