Higher Idle with e45/50 blend

Lmaiuri · 06-24-2013, 08:38 AM

Anyone experience an idle around 700/750 rpms with a higher e85 concentration?

135Pats · 06-24-2013, 12:10 PM

Idle will get rougher as you up the ethanol %. Are you running e50 with stock fueling? Im on the app cant see mods.

Colt · 06-24-2013, 12:11 PM

What are your modifications

Lmaiuri · 06-24-2013, 01:37 PM

The e50 was just a quick tank to test out map 7. I'm on stock fueling so I assume my pump wasn't happy about keeping up with the demand of e50 at idle. I just refilled my tank with E30 and I'm still waiting to see it drop back to ~600rpm. However, it is stable at 750, no fluctuating, no hesitation at start-up and no rough idle.

Tommeh · 06-24-2013, 05:34 PM

I think my car idles at 800 with 93 octane o.o

Vigilante375 · 06-24-2013, 09:39 PM

Between 600 to 1000 RPMs, steady RPMs, is where most vehicles are set to idle. As long as it's steady and not fluctuating, I wouldn't worry about it. Especially with it being at that low of RPMs. I think most cars idle around 600 - 640 RPMs right? I'll have to see what my 3 vehicles idle at tomorrow.

Lmaiuri · 06-25-2013, 09:49 AM

It's stead, I idled at 1k on cold start this morning, no long cranks, car starts right up. Drops to 6k and idles smoothly but after she warms up she sits around 700

06-24-2013, 08:38 AM	#1
Lmaiuri Second Lieutenant 64 Rep 256 Posts Drives: 13' Sapphire Black M5 Join Date: Mar 2013 Location: Annapolis, Maryland iTrader: (0)	Higher Idle with e45/50 blend Anyone experience an idle around 700/750 rpms with a higher e85 concentration?
	Appreciate 0 Tweet Quote

06-24-2013, 12:10 PM	#2
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	Idle will get rougher as you up the ethanol %. Are you running e50 with stock fueling? Im on the app cant see mods.
	Appreciate 0 Quote

06-24-2013, 01:37 PM	#4
Lmaiuri Second Lieutenant 64 Rep 256 Posts Drives: 13' Sapphire Black M5 Join Date: Mar 2013 Location: Annapolis, Maryland iTrader: (0)	The e50 was just a quick tank to test out map 7. I'm on stock fueling so I assume my pump wasn't happy about keeping up with the demand of e50 at idle. I just refilled my tank with E30 and I'm still waiting to see it drop back to ~600rpm. However, it is stable at 750, no fluctuating, no hesitation at start-up and no rough idle.
	Appreciate 0 Quote

06-24-2013, 05:34 PM	#5
Tommeh Lieutenant 56 Rep 481 Posts Drives: 96 BMW M3 & 16 GMC Canyon Join Date: Mar 2011 Location: Washington iTrader: (0)	I think my car idles at 800 with 93 octane o.o __________________ 2008 BMW 135i ///MSport Alpine White / Taupe Leatherette Cobb 2+ Aggressive \| BMS Intake \| ER Charge Pipe + Tial Q \| ER FMIC \| RR Downpipe \| RR Exhaust \| RR OCC \| KWV1 \| Apex ARC-8 245/18/40, 275/18/35
	Appreciate 0 Quote

06-24-2013, 09:39 PM	#6
Vigilante375 Major 116 Rep 1,158 Posts Drives: 2012 AW 6M 135i Join Date: Sep 2011 Location: WA iTrader: (0)	Between 600 to 1000 RPMs, steady RPMs, is where most vehicles are set to idle. As long as it's steady and not fluctuating, I wouldn't worry about it. Especially with it being at that low of RPMs. I think most cars idle around 600 - 640 RPMs right? I'll have to see what my 3 vehicles idle at tomorrow.
	Appreciate 0 Quote

06-25-2013, 09:49 AM	#7
Lmaiuri Second Lieutenant 64 Rep 256 Posts Drives: 13' Sapphire Black M5 Join Date: Mar 2013 Location: Annapolis, Maryland iTrader: (0)	It's stead, I idled at 1k on cold start this morning, no long cranks, car starts right up. Drops to 6k and idles smoothly but after she warms up she sits around 700
	Appreciate 0 Quote