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Author Topic: Fuel economy tune  (Read 4454 times)
Capt. Obvious
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« on: August 01, 2011, 11:56:23 AM »

I often take my S4 on long road trips and I was thinking it'd be nice to have a "maximum fuel economy" tune I could load up for times like that.  Obviously, staying out of boost is the best way to keep the fuel consumption in check, but what are some other things I should look at/tweak in order to make a fuel economy tune?

I'd like to still retain some power for passing and pulling hills, so I guess most of the attention for the tune would be with low-load conditions.

Any insights/ideas?
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phila_dot
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« Reply #1 on: August 01, 2011, 12:19:38 PM »

Have you read this thread:

http://nefariousmotorsports.com/forum/index.php/topic,530.0.html
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Capt. Obvious
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« Reply #2 on: August 01, 2011, 12:36:37 PM »

I missed that one, thanks.  I'm assuming most of the talk regarding closed/open loop operation will directly apply to my car as well?
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Giannis
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« Reply #3 on: August 03, 2011, 11:03:17 AM »

I'm using this kind of tune for a while but using it on a national road doesn't decrease fuel consumpion so much. It has though remarkable resoults in country roads when cruising at lower speeds such us 70-90 kmh. Try to increase your timing a bit and keep lambda at 1.10 - 1.14. Post the resaults. It would be interesting to see what happens i bigger engines than 1.8t.
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nyet
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« Reply #4 on: August 03, 2011, 11:08:57 AM »

IMO a taller 6th would probably help more than tweaking lambda..
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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