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What are the Largest Injectors the E.U. can Control?

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Old Sep 6, 2006 | 02:06 PM
  #1  
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Default What are the Largest Injectors the E.U. can Control?

Just as the title states, I am wondering how large of injectors I can use with the Emanage Ultimate. I have already been informed that 1000cc are much to large so I was contemplating using 750cc injectors but want to make sure these will work well.

Thanks!

JP
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Old Sep 6, 2006 | 02:36 PM
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i dont see why you couldnt scale the fuel map to work with ANY size injectors, it is just sending injector pulse widths to them and the larger injectors, the smaller the pulse widths need for the same hp/setup...


but i havent tuned or played with anything over 650s with the EU. so i cant say i know from experience. if this is really a problem, i would like to know the answer as well. i am thinking that you have been misinformed.
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Old Sep 6, 2006 | 03:03 PM
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At idle, you only have about 50% reduction capability. Injectors dont like to fire much below 1ms, as they atomize poorly. So even if you could scale them, the car will probably idle like crap.

A 750cc injector, with reasonable fuel pressure, is more than enough...for all but the most nasty street/race applications.
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Old Sep 6, 2006 | 03:07 PM
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yeah, ok, the EU scales differently than the utec, i have 650s scaled down at like 17-18% on the UTEC, i knew you could do 50 +- but i forgot it scales them differently for some reason.


i am running 650s at 80% duty cycle at 470whp (clutch limited) so you should be fine with 750s for a while...
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Old Sep 6, 2006 | 11:01 PM
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Thanks you two, so with that said will the EU have any trouble at all with the 750's?

I just want to make sure I do this correctly the first time around.

Thanks.

JP
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Old Sep 7, 2006 | 06:31 AM
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650cc's will work perfectly, and 750cc will work, with a little more fine tuning.
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Old Sep 24, 2006 | 06:54 AM
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Hey sharif how about pm-ing me a price on some 650cc injectors..??
brooke
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Old Oct 3, 2006 | 02:45 AM
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650's will work fine up to about 600rwhp. i personlly am pulling the initial injector pulse from both the parameter and airflow maps. all from the airflow map leaves the motor feeling soggy (due to lack of timing) and hard starts (due to no airflow pulse from the maf to convert the signal at start up) but at the same time, i will clip my maf very early too.
my next car is going full stand-alone, lol.
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