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      09-26-2012, 09:57 AM   #6214
EJ_3
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Drives: e92 335i, e34 525i & e60 530i
Join Date: Aug 2011
Location: N Las Vegas

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2007 BMW 335i  [8.34]
2016 Ram 1500 Sport  [8.00]
1994 BMW 525i  [10.00]
2007 BMW 530i  [8.66]
Quote:
Originally Posted by I3ossman View Post
Speaking from experience and using what I learned on the dyno with my tuner, you can NOT beat a good protune for e50 (50 e85/50 9xoct). I can only imagine how good the results on a meth/e50 tune would be.. ultimate track setup. I can't bear driving my car on stg2 agg anymore when e85 isnt an option (its 25+miles away). When the difference is this significant (330whpish vs 450whp) it is a no brainer for me. As far as fuel consumption goes I have lost maybe 1.5mpg on the e50 map I have, however it is a very aggressive tune so if this is a concern for you i'm sure if you just tell your tuner your goals they can adjust accordingly to make sure its not a complete gas guzzler.
Good info, I didn't know it would make that big of a jump, I was imagining maybe 30hp at the most. I put down 359 on the dyno with 93 octane, so if I go protune with E45 (E85/91) I should be hitting around 465hp?
Quote:
Originally Posted by VNeBLOB42 View Post
Guys,

lets be clear, E50 is not 50/50 E85/93 or 91. E50 means 50% ethanol, like E30 means 30% ethanol.

to get E50 on a 16 gallon tank its more like 8.5 gallons of E85 and 7.5 gallons of Pump 91 or 93, based upon regular pump having E10.

50/50 - E85/9x Octane is more like E48.... just saying..
Make since, thanks for clarifying.
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