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Aug 5, 2009, 09:15 PM
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#1
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E85 big injectors low idle Q
Whats the largest injector I can run but still have nice 850-900 rpm idle?
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Aug 5, 2009, 09:25 PM
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#2
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im running 1000s with the green turbo my idle is right around 900 rpm feels good. only when i run the ac, every so often i get like a hiccup lol at idle but never been an issue.
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Aug 5, 2009, 10:26 PM
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#3
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Stock idle - 852 rpm - on RC 1,000cc injectors.
I have tweaked the idle up to 1,133 rpm when the A/C is on.
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Aug 5, 2009, 10:44 PM
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#4
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RC 1000's here and idles just like stock...
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Aug 6, 2009, 01:09 AM
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#5
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Quote:
Originally Posted by 94AWDcoupe
Whats the largest injector I can run but still have nice 850-900 rpm idle?
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So far 1450 BlueMax
I'm thinking of trying out a set of 1600's on my personal car just to conquer them on 91 oct (I know they work on E85) to say I did. 
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Aug 6, 2009, 01:11 AM
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#6
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I have FIC 950's now and am planning on BlueMax 1650's so I can run serious boost.
My 950's idle amazing though.
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Aug 6, 2009, 02:27 AM
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#7
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I'm running PTE 1200's and mine is at 900. With A/C on it's around 1200
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Aug 6, 2009, 06:41 AM
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#8
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Hmm. wonder why you guys need to bump idle with a/c? my injector dynamic 1000 idle like stock at 850 with and without a/c. but I want to go bigger to 1200s. and my second car will need even more like 14--1600. GST how do the 1450 idle with a/c? do you think you can get bosch 1600s to idle low?
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Aug 6, 2009, 08:58 AM
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#9
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Quote:
Originally Posted by 94AWDcoupe
Hmm. wonder why you guys need to bump idle with a/c? my injector dynamic 1000 idle like stock at 850 with and without a/c. but I want to go bigger to 1200s. and my second car will need even more like 14--1600. GST how do the 1450 idle with a/c? do you think you can get bosch 1600s to idle low?
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Curious why not add a FPR and second fuel pump and crank your base pressure? the ID's are designed to work better at higher base pressures. At 100 psi they will work like a set of 1600's and you will still have outstanding idle quality and all the other benefits the ID's have over other injectors.
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Aug 6, 2009, 10:21 AM
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#10
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I have the target idle set at 850, but it rarely get there. Most of the time it is @1000, and if it is hot it will hang at 1100-1200. I have RC 1000cc's. It does this on 91 pump as well. I have a mini battery, not sure is that is related...
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Aug 6, 2009, 10:46 AM
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#11
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My Bluemax 1450's idle fine on pump gas, it just took some swearing to get them scaled. I think my intake wasn't helping the issue as I did MAF scaling to get things working correctly.
Bryan try the 1600's I've always wondered if they would work on pump gas.
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Aug 6, 2009, 11:01 AM
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#12
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Quote:
Originally Posted by travman
Curious why not add a FPR and second fuel pump and crank your base pressure? the ID's are designed to work better at higher base pressures. At 100 psi they will work like a set of 1600's and you will still have outstanding idle quality and all the other benefits the ID's have over other injectors.
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the problem with that is fuel pump wont keep up at high boost. if I crank base to 50psi the fuel pump has to do that 50psi plus the boost psi 50+35=85psi. add in pressure loss through lines and filter and pump would need to be strong at 95psi.
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Aug 6, 2009, 11:12 AM
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#13
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Quote:
Originally Posted by 94AWDcoupe
the problem with that is fuel pump wont keep up at high boost. if I crank base to 50psi the fuel pump has to do that 50psi plus the boost psi 50+35=85psi. add in pressure loss through lines and filter and pump would need to be strong at 95psi.
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Yeah I know - just add an external pump (bosch) or a twin in-tank setup?
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Aug 6, 2009, 11:28 AM
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#14
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Quote:
Originally Posted by 94AWDcoupe
GST how do the 1450 idle with a/c? do you think you can get bosch 1600s to idle low?
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Seemed fine when it rolled out of the shop (I always test A/C idle with aftermarket injectors.)
I've tuned a couple ID 1000's on the Evo 10's and so far I really like them.
Not sure on 1600's as I haven't touched them yet.
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Aug 11, 2009, 09:53 PM
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#15
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My FIC 1050s idled just slightly choppy on pump gas. They flow 20-25% more than pretty much any other 1000 cc/min injector though.
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Last edited by mrfred; Aug 11, 2009 at 09:57 PM.
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1000, ac, big, bosch, e85, evo, id, idle, injector, injectors, lancer, low, rc1000, rpm, target, tune  |
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