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Discussing Fuel Injectors/fuel pressure in the 99-04 Forum. At the risk of sounding stupid....but at what point are the stock 19 lb ...

       

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Old August 1st, 2007, 09:49 AM   #1
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Fuel Injectors/fuel pressure


At the risk of sounding stupid....but at what point are the stock 19 lb injectors and stock fuel pressure at their limit? I have been told 19lb injectors are good to 300hp. I am not sure if thats rear wheel or flywheel. I have all the simple bolt ons and I realize that I dont need bigger injectors yet. The only reason I am asking this is because I want to make sure I am not leaning out at WOT. Would it be worth me getting a generic tune for my setup? To possibly bump up fuel pressure a tad.
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Old August 1st, 2007, 10:44 AM   #2
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a tune would be a good thing.

I would suggest a wide band 02 sensor as well.
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Old August 1st, 2007, 01:13 PM   #3
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i have most bolt ons, and i am about to add p&p heads and headers to the list. i will still be on stock injectors. i havent had any leaning problems, actually i am runnning really rich and have been trying to get it tuned out. the stock 19lb injectors should hold to around 320rwhp, after that you may want to go ahead and invest into a set.
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Old August 2nd, 2007, 01:04 AM   #4
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I made 330rwhp at 90% duty cycle on my 19# injectors, I changed to a 30# and made the same peak but the curve was flatter and was only at 65% duty cycle.
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Old August 2nd, 2007, 09:54 AM   #5
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Thanks everyone for your replies, I appreciate it.
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