Fuel economy doesn't change. Going to larger>>

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Subject Fuel economy doesn't change. Going to larger>>

Posted by SirpriZ on March 15, 2002 at 12:59 PM

This message has been viewed 63 times.

In Reply To What about fuel economy? Does it change if you drive "easy"? (n/m) posted by Woody75 (Denver) on March 15, 2002 at 12:32 PM

Message injectors doesn't change fuel useage. The ECU is programmed to supply the same amount of fuel to the engine with larger injectors by shortening the pulse width that the computer sends to the larger injectors...ie. bigger injectors are not open as long and deliver the same amount of fuel at any given demand. The larger injectors allow you to be able to deliver more fuel to an increased air flow thru the engine. This is what is needed when you upgrade turbos and start moving more air thru the engine than the stock injectors can supply. Stock injectors can support (about) 425-450 flywheel horsepower. Mark

Follow Ups
To get or not to get 555 injectors, Help. - Woody75 (Denver) 11:39:40 03/15/02
Re: To get or not to get 555 injectors, Help. - Marshall 11:48:42 03/15/02
Yes you can run more, but I think safely it is 17 PSI max.. (n/m) - Woody75 (Denver) 11:56:02 03/15/02
Absolute waste of $ IF you plan on keeping your turbos - SirpriZ 11:56:45 03/15/02
I plan on going larger someday, just not right now. (n/m) - Woody75 (Denver) 12:31:57 03/15/02
good time to do it unless you like to do all the - TARGETZ 12:00:05 03/15/02
Well aside fomr the labor, do I really need them now? - Woody75 (Denver) 12:31:37 03/15/02
if your stock injectors are fine then... - TARGETZ 12:47:12 03/15/02
What about fuel economy? Does it change if you drive "easy"? (n/m) - Woody75 (Denver) 12:32:58 03/15/02
Fuel economy doesn't change. Going to larger>> - SirpriZ 12:59:17 03/15/02
That's not entirely correct. The pintle on a larger injecto - Bernie 14:06:30 03/15/02
I'd say it's worth it...... - ZBlacktt 14:03:44 03/15/02
I agree 100%. Especially since he will be going with larger - Bernie 14:09:56 03/15/02

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