What size injectors?

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Old Jun 20, 2007 | 03:29 PM
  #1  
matt_h22a's Avatar
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Default What size injectors?

Alright i ordered a turbo kit off ebay, and what im wondering is how do i know what size injectors to put on it? Its a 1994 honda prelude SR-V 2.2 Vtec
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Old Jun 20, 2007 | 03:54 PM
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Default Re: What size injectors? (matt_h22a)

It depend on what you hp goals are and what you have for engine management.I don't think I would ever use anything smaller than 550's if you have engine management (Hondata,Crome,AEM,etc...).
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Old Jun 20, 2007 | 04:21 PM
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ForceFed Motorsports's Avatar
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Default Re: What size injectors? (matt_h22a)

Its better to buy injectors with room for advancement than to have to buy new ones if you decide to up the boost. Go with 450's or bigger.
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Old Jun 20, 2007 | 04:49 PM
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Default Re: What size injectors? (ForceFed_Motorsports)

well im only aiming for around 7 - 10 psi boost for now, i have a buddy that used to work for neutronics so he has all the programs for programming the chip. i might eventually run higher boost but for now im just trying to keep the prices down and not do all kinds of engine work yet.
If im not mistaken not to sure tho, i dont want to be running injectors that are to big because then its going to be running really rich, correct me if im wrong.
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Old Jun 20, 2007 | 04:57 PM
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Default Re: What size injectors? (matt_h22a)

450cc should be good for you... i have the same kind while boosting 5-7 pounds. and i beleive 450cc are good for up to 12pounds or so
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Old Jun 20, 2007 | 04:58 PM
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Default Re: What size injectors? (matt_h22a)

Don't think in psi , think in hp.Because 7-10 psi on a small turbo maybe 250 hp which some 450's will easily handle but with a big turbo that maybe 350 hp which you wouldn't want to use 450's with.The price difference is very small between injectors.
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Old Jun 20, 2007 | 05:11 PM
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ForceFed Motorsports's Avatar
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Default Re: What size injectors? (NJIN BUILDR)

Im around 300whp on my 450's and thats with stock base fuel pressure... with an adjustable fuel pressure regulator there is always room for advancement but yes running a larger injector will avoid that. Plus if your just lookin for cheap then 450's are right for what your lookin to make power and budget.
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Old Jun 20, 2007 | 06:31 PM
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Default Re: What size injectors? (lovey408)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by matt_h22a &raquo;</TD></TR><TR><TD CLASS="quote">
If im not mistaken not to sure tho, i dont want to be running injectors that are to big because then its going to be running really rich, correct me if im wrong.</TD></TR></TABLE>

that's where tuning comes in. some people are daily driving with 1000cc injectors.
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Old Jun 20, 2007 | 08:45 PM
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Default Re: What size injectors? (doood)

oh yeah ur right.. its based on horsepower... i was on 5-7 pounds wit 255whp and he said if i boost around 10 ill be around 300-350 and these injectors will be fine... i never knew going bigger wuld be easier since u can tune to less fuel..
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Old Jun 20, 2007 | 11:07 PM
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Default Re: What size injectors? (lovey408)


If you are going to run a hondata/crome/neptune/aem or some other *real* ecu - just get the largest injectors you can get your hands on.

Any of those ecus i mentioned above will idle/run any injector and since they all cost about the same anyways - just get the big ones - it will give you room to grow in the long run.

liam

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Old Jun 21, 2007 | 05:23 AM
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Default Re: What size injectors? (liam821)

i would love to see someone with some 1000cc injectors on ther 14b/hf mani set up...hahaha
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Old Jun 21, 2007 | 06:18 AM
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Default Re: What size injectors? (91jdmhatchback)

alright guys thanks for answering my question, another question if i may. Does anyone know where i can buy fair priced injectors?
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Old Jun 21, 2007 | 11:02 AM
  #13  
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Default Re: What size injectors? (NJIN BUILDR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR &raquo;</TD></TR><TR><TD CLASS="quote">Don't think in psi , think in hp.Because 7-10 psi on a small turbo maybe 250 hp which some 450's will easily handle but with a big turbo that maybe 350 hp which you wouldn't want to use 450's with.The price difference is very small between injectors.</TD></TR></TABLE>

thankyou.

i got my injectors from the classifieds. they were 1200's, but got them at a good price, had them flow tested, balanced and cleaned, and were still half the price of new ones.
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Old Jun 21, 2007 | 12:26 PM
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Default Re: What size injectors? (91jdmhatchback)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91jdmhatchback &raquo;</TD></TR><TR><TD CLASS="quote">i would love to see someone with some 1000cc injectors on ther 14b/hf mani set up...hahaha </TD></TR></TABLE>

Why not? I mean if you're gonna pay money for them get the big ones.
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