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Bigger fuel injectors for cammed 5.3?

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Old Feb 24, 2012 | 05:39 PM
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Originally Posted by dmelvin
They'll probably be a pain to tune for idle
I doubt it. I actually tried swapping stock injectors in my truck to see if it would make tuning the idle easier and it made no difference at all. My 60's are also the fiveo motorsports ones that come with crap data...
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Old Feb 24, 2012 | 08:29 PM
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Originally Posted by LS1TRUCKGUY
my stockers have seen 103% duty cycle for the past two years... no issues yet
02 had bigger injectors than 2000 models right? If so mine should be fairly close to maxed out. Going off the truck in your sig, since we're pretty close to the same in mods.
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Old Feb 24, 2012 | 10:14 PM
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2000 may or may not have small injectors, since that was the year they switched. My friend's 2000 has the larger injectors(24 lb/hr)...
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Old Feb 29, 2012 | 05:55 PM
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With a small cam, a little head work, and headers my stock injectors saw 100% duty cycle at 5,000 and 115% 5,500 and couldn't give any more fuel then. I am only making 330rw but I think that is due to some issue with the drive train. The motor is def making more power than is showing at the wheels.
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