In the thread below, one forum member noted better fuel economy after changing injectors.
I was curious and bought three matched injectors, tuned to a max flow of 220ccm. This is a bit less than the supposedly correct 230ccm of the OEM injectors.
Changing them was easy, and took about 20 minutes. The FSM has detailed instructions.
The differences of the injectors:
The circle of the ten holes that output the fuel has a 50% or so greater diameter, the ten actual holes being the same diameter as the old ones. The spray mist of the new ones is finer than the OEM. You can tell by cranking the engine with removed fuel rail, and visibly comparing old and new injectors.
The differences driving:
The new injectors are rated 220ccm as opposed to 230ccm of the OEM variety. As expected, there is now a little bit less power. I could have ordered them with 230ccm and retain power, but I preferred better economy to more power. Better economy was the motive for changing.
During warm-up, or about the first ten minutes, the fuel consumption is definitely lower. Once the engine is fully warm, there is almost no difference. In total, with my style of driving I save about 5 to 10% fuel, depending on the driven distance.
This is where I bought them, and what was bought. The total cost including freight was €46 being roughly US$ 50.
NB: After changing injectors, the ECU has to learn the new settings for idle!
The FSM says to fully warm up the engine, then turn it off and start it again 10 seconds later, and let it idle for ten minutes before turning it off again.
The ECU will then have learned how to idle properly with the new injectors.
2014 Mitsubishi Space Star (Mirage) 1.0L
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