Flow rate of LS7 injectors
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From: Southern Colorado Front Range
I was under the impression that the LS7 injectors flowed 42 PPH @ 43.5 PSI. That would put them at 55.9 PPH @ 58 PSI.
(new fuel pressure / old fuel pressure) x old flow rate of injector = new flow rate at new fuel pressure.
(new fuel pressure / old fuel pressure) x old flow rate of injector = new flow rate at new fuel pressure.
thats why i wanted you to check the part number. unless they came from your car. If you bought them there are tons from ls2 being sold as ls7's they look identical. secondly oe injectors are rated at the oe rail pressure. only aftermarket is rated at 3 bar. take a ls1 28.lb its rated at 28 at 58 at 43.5 it flows a bit under 24 . check the part number this is the gm # for the ls7 12576341 it is 42 at 58. and the ls2 is 34 at 58
thats why i wanted you to check the part number. unless they came from your car. If you bought them there are tons from ls2 being sold as ls7's they look identical. secondly oe injectors are rated at the oe rail pressure. only aftermarket is rated at 3 bar. take a ls1 28.lb its rated at 28 at 58 at 43.5 it flows a bit under 24 . check the part number this is the gm # for the ls7 12576341 it is 42 at 58. and the ls2 is 34 at 58
That equation is not correct for the change in flow rate based on the change in fuel pressure. You need the ( square root of (new pressure / old pressure) ) * old flow rate = new flow rate.
TECH Apprentice
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From: Southern Colorado Front Range
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regardless they're 42lb's at 58PSI. I can copy over the LS7 injector settings into your LS1 PCM tune file if you need. I'm running them right now and went through the number crunching to get the tune right. Just PM me your EFILive file.
TECH Apprentice
iTrader: (5)
Joined: Dec 2007
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From: Southern Colorado Front Range
