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Old 01-30-2008, 09:08 AM   #1 (permalink)
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Location: Mirabel, QC
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The Guzzler - '08 Hyundai Elantra GL
90 day: 33.12 mpg (US)

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Better injectors for better FE

I have read a bit here and there on various FE oriented sites since we bought the gasser but have not come across anything mentionning injectors.

I don't know if it could make sense for gassers, but diesels benefit a lot from aftermarket injectors.

On most of our manual TDIs, the stock injectors are 0.184 liters per minute with 5 holes. Lots of modders have been installing .205 or even .216 injector nozzles in their quest for performance. An interesting byproduct of this as also been better FE at light throttle. It appears that injectors with bigger holes allow to dump the requested fuel quantity in a shorter period of time than stock injectors, resulting in better effeciency.

The new trend now is to go with 7 holes injectors. These would appear to give even better atomisation of the fuel.

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