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gain w/ injectors?

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Old Jun 11, 2007 | 11:10 AM
  #1  
boostin@27's Avatar
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gain w/ injectors?

i was wondering how much power i will gain if i get 660cc injectors? my following mods are 20g turbo, ams fmic kit, mr exhaust manifold, injen intake, espelir dp, ultimate racing tp, greddy tic cbe, walbro fuel pump, boost controller. i have around 340 whp, and i was wondering how much more power and boost i could run with the 660cc injectors?
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Old Jun 11, 2007 | 11:27 AM
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Injectors alone will not gain you power.

What is your current IDC? Are you running out of injectors?

You might have room to run more boost using you current injectors.

Based on your setup I would guess that you are probably close to maxing our your injectors. If you want to run higher boost and race gas then injectors will most likely be needed. However if you are not maxing out your injectors then getting new ones will not benefit you.
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Old Jun 11, 2007 | 11:31 AM
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Ditto, if the duty cycle is too high the injectors will get real hot and end up being open all the time instead of sending pulses of fuel. ANyone have good cost effective injector brand/model recommendations? I'd
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Old Jun 11, 2007 | 11:35 AM
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do you think i should do with cams first?
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Old Jun 11, 2007 | 12:12 PM
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If you have a true 340whp, then you're probbaly maxing out your injectors now. I'd love to know how you got that much HP without cams though. If you've got engine management you can log Injector Duty Cycle. You shouldn't be hitting over 90% for long.
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Old Jun 11, 2007 | 12:20 PM
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Cams should have been a mod before the 20G turbo and before the AMS FMIC. That is why youre power is low. Secondly, like other said, injectors dont give you power. They will allow you to make more power if you are maxxed out on your current ones and are limited by fuel.

You need some cams and injectors and a tune.
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Old Jun 11, 2007 | 12:44 PM
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i dont have that much money to spend i only have like 350, so i was goin to either get cams or injectors. which one will benefit me more?
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Old Jun 11, 2007 | 12:51 PM
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Originally Posted by Lowell787
Ditto, if the duty cycle is too high the injectors will get real hot and end up being open all the time instead of sending pulses of fuel. ANyone have good cost effective injector brand/model recommendations? I'd
Not sure about cost effective, but FIC and PTE seemed to be the best choice for our cars IMO.
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Old Jun 11, 2007 | 01:00 PM
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If you max out your current injectors (which it sounds like you're close if not doing so already) and run lean, you will have a huge cost on your hands. I'd recommend figuring out a way to log your Injector Duty Cycle. If it goes over 90% as you do a full throttle pull to redline, you should think about investing in injectors first. The gains will come from the cams, but preserving your motor should be first priority as melting pistons and turbines and getting engine knock from running lean is bad mmkay .
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Old Jun 11, 2007 | 01:00 PM
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boostin@27 - Please read what we have already told you. Find out your duty cycle and determine if you are maxing out your injectors(or you are close, >95%). If you are get new ones, if you are not then don't, its that simple.

If you dont tune yourself, which it doesn't seem like you do, then who is your tuner? The need to upgrade injectors could be easily determined by your tuner.
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