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Strange Idle - after fuel pump swap (E85)

Originally Posted by Spooler It is always NA at idle. It just requires more fine tuning for the tuner with larger injectors. I’m aware of this which is exactly the

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Old 08-25-2021, 01:07 AM   #31 (permalink)
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It is always NA at idle. It just requires more fine tuning for the tuner with larger injectors.
I’m aware of this which is exactly the issue. Essentially you need a fire hose at WOT to put out the fire but now your still left with a fire hose at idle to put out a mild camp fire. So your trying to control a trickle out of a fire hose without completely flooding the campsite.
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Old 08-25-2021, 01:34 AM   #32 (permalink)
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Am running 1050x injectors having the same problem at idle when cold start, after driving the car for a minute, then i go to idle, the revs are planted at 900rpm(that's the setting), but i know its a tune issue 100%. Because the ECU fine trims everything, i also noticed that at warmer OAT 80F+ the car does not have this issue.
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Old 08-25-2021, 01:15 PM   #33 (permalink)
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I’m aware of this which is exactly the issue. Essentially you need a fire hose at WOT to put out the fire but now your still left with a fire hose at idle to put out a mild camp fire. So your trying to control a trickle out of a fire hose without completely flooding the campsite.
LOL, you guys have no idea. The only issue I hate is for flex fuel tuning. When you fill up with 93 oct. instead of E85 it sends the ECU into a freak out mode. The idle is for chit, all over the place This little idle issue op has stated is nothing to worry about. You want to know why I stay on E85 all the time, this is it.
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Old 08-25-2021, 02:31 PM   #34 (permalink)
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I’m running E85 on Ecutek with a flex fuel setup, GT-R injectors, AEM 340 pump. No idle issues.
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Old 08-25-2021, 09:57 PM   #35 (permalink)
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LOL, you guys have no idea. The only issue I hate is for flex fuel tuning. When you fill up with 93 oct. instead of E85 it sends the ECU into a freak out mode. The idle is for chit, all over the place This little idle issue op has stated is nothing to worry about. You want to know why I stay on E85 all the time, this is it.
Can’t say I’ve experienced the same issue (only have 91 here but shouldn’t be that different). Switched back and fourth 3 times already this month and ecu adapts immediately without any noticeable change.
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Old 08-25-2021, 10:17 PM   #36 (permalink)
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Can’t say I’ve experienced the same issue (only have 91 here but shouldn’t be that different). Switched back and fourth 3 times already this month and ecu adapts immediately without any noticeable change.
With 1700cc injectors, this is a freaking issue. LOL
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Old 08-25-2021, 11:00 PM   #37 (permalink)
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With 1700cc injectors, this is a freaking issue. LOL
Which is exactly what I and others were saying and you said in previous post it’s all in the tune and you have no issues. Now you say you have this issue and with 1700cc injectors this is an issue.

So which is it? You have no issues or you do have this issue? Both can not be true.
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Old 08-25-2021, 11:01 PM   #38 (permalink)
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It is all in the tune. I run 1700cc injectors and have no issues. Do you need that large of an injector NA. That would be a no.
Just a refresher.
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Old 08-25-2021, 11:37 PM   #39 (permalink)
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Just a refresher.
Whatever, you don't get it because you have no idea what I am talking about.
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