Strange Idle - after fuel pump swap (E85)

Jhill · 08-25-2021, 02:07 AM

Quote:

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 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.

DOOMMONKEY777 · 08-25-2021, 02:34 AM

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.

Spooler · 08-25-2021, 02:15 PM

Quote:

Originally Posted by Jhill

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.

HisStigness · 08-25-2021, 03:31 PM

I’m running E85 on Ecutek with a flex fuel setup, GT-R injectors, AEM 340 pump. No idle issues.

Jhill · 08-25-2021, 10:57 PM

Quote:

Originally Posted by Spooler

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.

Spooler · 08-25-2021, 11:17 PM

Quote:

Originally Posted by Jhill

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

Jhill · 08-26-2021, 12:00 AM

Quote:

Originally Posted by Spooler

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.

Jhill · 08-26-2021, 12:01 AM

Quote:

Originally Posted by Spooler

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.

Spooler · 08-26-2021, 12:37 AM

Quote:

Originally Posted by Jhill

Just a refresher.

Whatever, you don't get it because you have no idea what I am talking about.

08-25-2021, 02:34 AM	#32 (permalink)
DOOMMONKEY777 A True Z Fanatic Join Date: Oct 2010 Location: Crooklyn Posts: 1,008 Drives: 370Z 6psd-sport-pkg Rep Power: 21	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. __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

08-25-2021, 03:31 PM	#34 (permalink)
HisStigness Base Member Join Date: Jan 2014 Location: San Ramon Posts: 65 Drives: 10 370Z Sport 6MT Rep Power: 11	I’m running E85 on Ecutek with a flex fuel setup, GT-R injectors, AEM 340 pump. No idle issues. __________________ Stillen \| Fast Intentions \| Setrab \| GT-R injectors \| CJM \| Radium Engineering \| Ecutek (Eugene Turkov) \| E85 \| Racing Brake \| Endless \| Goodridge \| Z1 \| AME \| HKS \| Whiteline \| SPL \| Hotchkis \| Z Speed

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