Porsche 911T (F Series) ~ 1973-1973
However, the F series 911T deserves a place in Porsche history, in that ones bound for the USA were the first 911s to be fitted with Bosch K-Jetronic fuel injection. Also called CIS injection, this all-new system was fundamentally mechanical but did utilise some electronic sensors and overrides. Porsche adopted K-Jetronic because it gave precise injections of fuel as required, thus keeping emissions down and improving economy. It was also a relatively cheap and reliable mechanism. K-Jetronic was to go on to feature more prominently in the 911 range from 1974.
For other markets, the 911T used Zenith 40 TIN triple-choke carburettors, which may not have been as efficient as the fuel-injection, but gave the engine a throaty sound. This was the final year that carburettors were fitted to production 911s, so for this reason alone a late 911T is an attractive purchase today.