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Old 10-18-2020, 06:30 AM   #1
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CMR Tuning with E85

Has anyone done CMR tuning with E85 on our Dodge Hemi Rams yet?

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Old 10-18-2020, 10:21 AM   #2
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Yes! IMO not worth the time or money till your clearing 900wheel. E85 you
Need roughly double to fuel the engine and unless you your making massive power 93 or 93 + oct booster or methanol is more than enough.
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Old 10-18-2020, 05:03 PM   #3
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Noticed E85 being used on all out race cars/trucks. Not being used on the street as much. The stage II w/m kit from the 03 will be put on the 05. Still working on getting the 05 drone quieted down a little more.
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Old 10-19-2020, 07:37 AM   #4
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When properly set up, E85 should really only require 25-30% more volume than 93.
Mileage will suffer but you should be looking at it in $/mile as opposed to miles per gallon at that point.

Agreed on not worth the effort on most N/A set ups. Wont catch an SRT4 guy passing an E85 station though
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Old 10-19-2020, 03:28 PM   #5
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My turbocharged 392 wasn't built for gas mileage anyway.
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Old 10-19-2020, 03:49 PM   #6
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Quote:
Originally Posted by Ghost03hemi View Post
My turbocharged 392 wasn't built for gas mileage anyway.
If your talking a turbocharged 392, and have access to E85 at the pump, there’s a million reasons to switch.
Obviously the power gains. It can/will outperform even 100 octane when tuned properly.
Our Redeye went from 770 to 850 rwhp from just the 93 to E85 switch.

Then there’s the tuning window and safety aspect. The resistance to detonation is way better than pump fuels. It can and will save parts. Knock events that would have taken out a piston or rod on pump are often absorbed by E fuels with no damage.

You want to make sure you have plenty of fuel system capacity and injector. Don’t let it sit in the tank for weeks on end...if needed just mix it with some 87 at least.
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Old Yesterday, 01:53 AM   #7
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Those are all good points Mike.
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Old Today, 02:46 AM   #8
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Looking at E85 so I wouldn't have to run water/meth injection.
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Old Today, 08:48 AM   #9
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I refuse to run it. I don’t want the hassle of trying to find fuel or having to bring fuel with me all the time due to lack of mpg.
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Old Today, 10:04 AM   #10
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That's a very good point as well Keith.

Are you still driving your turbocharged 392 on the street? Thought you were going to turn it into a full on drag truck with a roll cage?
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