quote:Originally posted by Rapier:
...George, How did the performance change on the classic mustang when switching from carb to EEC-IV? Did you get smoother running, more power and better fuel economy? Just how common is this stuff in breakers yards in the US?...
The greatest improvement is felt below 2000 rpm. The engine idles & runs much smoother, like no carburetor is capable of duplicating. Throttle response is more instantaneous. Around town fuel economy improves about 15%. There are no hitches or glitches in the power band as you accelerate. The motor pulls smoother and more consistently. There's no place where the "secondaries come in" which causes a surge in power, its just smooth pullig like an electric motor all the way through the powerband. There's no stumbling when accelerating out of a hard corner or during hard braking.
Breaker yard? Are you sure you blokes speak the same language as us Yanks? Ha, ha, ha .... Like Dan wrote, the parts are very common, Ford sold very many 5.0 liter Mustangs here in the US.
The engine I helped install fuel injection in was a 302 cubic inch (5.0 liter) Windsor, ported heads & bigger valves, Cobra intake manifold, the typical cam I always recommend to people with a power band of 2000 to 6000 rpm. The owner installed higher flow rate fuel injectors and a larger throttle body, and better shorty style headers. We did not have to modify the engine management system at all. The combination of a mass air flow sensor and an oxygen sensor makes the system very tolerant of performance modifications. The engine management system employs adaptive software, which gives it the capability to create new curves (tables) in response to changes you make to the motor. I think it's bitchen.
your friend on the DTBB