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Do I need bigger injectors?

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Old Jun 14, 2004 | 09:12 AM
  #1  
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From: mass
Default Do I need bigger injectors?

Ok I just got my head/cam car set up and tuned. The parts are an older set od Absoulte Speed stage II LS1 heads, A custom cam 224/224/115.5 .558 lift. the car was tuned to a 12.5 A/F ratio and put down 407.1 rwhp, 371.7 rwtq thru SLP LT with cats and 2 mufflers.
My question is that doing some autotapping my injectors are at 22.92 ms@ 5182rpm which =98% dutycycle and 21.12ms@5867rpm which =103% dutycycle. Do I need to upsize the injectors? I have a set of ford SVO 30lb inj that I can install, but then it is back to CT (3hr drive) for a retune. I also would want to get the SVO's cleaned as I got them used.
I would like to keep the smaller injectors in the car to keep the gas mileage up, and not cost me for a retune.
also if I swap the inj here at home can I drive to CT ( 3hrs) with them before I get them tuned
I know if I want to run a dry N2O system the Inj must swap, I do have a TNT wet system I was thinking about useing for a 75 shot.
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Old Jun 15, 2004 | 01:50 PM
  #2  
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From: East Side Performance! mASShole
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i would change them when you get there. Ken wont mind, just let him know you will be doing it.
he will help, and it will be done in 10 minits
i would say you have room if you stay na, if you hit it, then its upgrade time.
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