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Default E40 mix on 1.6t...lean afr on tip in normal no - 09-14-2020, 05:15 PM

Noticed I get lean afr reading on initial throttle tip in, but goes into a normal range after. I don't thinks it's a problem. I never noticed when running straight 94 pump gas. Can I up my ethanol mix to say e50?? And still getting those
crappy throttle cuts and no load values were logged for some reason. Just looking for a second opinion. Thanks
Attached Files
File Type: csv E40_3rd_meth60_map2.csv (7.1 KB, 8 views)
File Type: csv E40_3rd_meth60_map3.csv (7.3 KB, 7 views)
File Type: csv E40_3rd_meth60_map4.csv (6.3 KB, 5 views)
File Type: csv E40_3rd_meth60_map5.csv (6.5 KB, 6 views)
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Djfourmonie Djfourmonie is online now
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Default 09-16-2020, 05:03 AM

Quote:
Originally Posted by Lil Ripper
Noticed I get lean afr reading on initial throttle tip in, but goes into a normal range after. I don't thinks it's a problem. I never noticed when running straight 94 pump gas. Can I up my ethanol mix to say e50?? And still getting those
crappy throttle cuts and no load values were logged for some reason. Just looking for a second opinion. Thanks
I was curious so I took a look at Map 2 and Map 5 logs. Air Fuel Ratio looks good. Direct Injection engines; 13.5 isn't lean like it is on a port injected car, no worries.

As load goes up AFR goes down and levels out at 12.0 which is fine since you have WMI as well.

Timing looks good 13.5 right before fuel cut and climbing. Moving the rev limiter out to 7,000 should see more ignition advance. A 4th gear pull should be an attention getter.

Throttle closure: Wheel spin? Clutch slip with the DCT?
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Default 09-16-2020, 07:15 AM

Quote:
Originally Posted by Djfourmonie
I was curious so I took a look at Map 2 and Map 5 logs. Air Fuel Ratio looks good. Direct Injection engines; 13.5 isn't lean like it is on a port injected car, no worries.

As load goes up AFR goes down and levels out at 12.0 which is fine since you have WMI as well.

Timing looks good 13.5 right before fuel cut and climbing. Moving the rev limiter out to 7,000 should see more ignition advance. A 4th gear pull should be an attention getter.

Throttle closure: Wheel spin? Clutch slip with the DCT?
Thanks for your input!

I don't think it's wheel spin or clutch slip. From time to time the power will feel wavy if I go Wot at lower rpms in the higher gears(3,4,5 etc). But it doesn't do it if I start in first and let it wind out every gear. I'm still guessing it must be a load based protection thing for the transmission. Super Annoying! Thankful it doesn't do it often.

How do I raise the Rev limiter? And how will I know If have added too much e85
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Default 09-16-2020, 10:01 AM

Seems fine to me. Log says meth but I presume you meant ethanol?
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Default 09-16-2020, 04:00 PM

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Originally Posted by Terry @ BMS
Seems fine to me. Log says meth but I presume you meant ethanol?
So I mixed 5 liters e85 to 13 liters of 94octane too make(e40). And I mixed my methanol injection to %60 methanol.. I am going to increase my WMI to %80 methanol and bump the e40 up to e50. What will I see in the logs if I am running too much e85?
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Default 09-16-2020, 04:09 PM

Possibly fuel pressure unable to keep up, rough starting on cold mornings, etc, with too high of an E85 mix.


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Default 09-16-2020, 04:28 PM

Quote:
Originally Posted by Terry @ BMS
Possibly fuel pressure unable to keep up, rough starting on cold mornings, etc, with too high of an E85 mix.
So when fph starts too drop I have gone too far.
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Default 09-24-2020, 01:31 PM

That's one indicator, yes.


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