Subject	If your only getting 12 MPG on gasoline....
Posted by	Greg D. (Specialty-Z) on September 15, 2015 at 6:35 PM
	This message has been viewed 543 times.
In Reply To	What MPG are you guys getting on E85? posted by RZturbo on September 15, 2015 at 05:09 PM
Message	Something is very wrong with your set up. These cars get between 24 and 28 MPG on gasoline driving normal on the highway. If you floor it from every stop and only drive in town, well sure 12 mpg is going to happen. In my experience E85 uses 30% more fuel at heavy loads, but cruising you can set them leaner and run more timing safely, so around 15 to 20% more fuel is realistic when tuned correctly for cruising. What you also have to keep in mind is E85 typically costs about 30% less than gasoline, so the fuel cost is a wash. If you compare with race fuel, E85 is drastically cheaper, safer, and makes more power when properly tuned. You have stated you have Haltech, if that is true, you simply need to add a I/O box and ethanol sensor. The Haltech can tuned for true flexfuel, the ECU has tables that allow compensation for any amount of gasoline or ethanol once you add the I/O box and sensor.
Follow Ups	Ethanol content variation questions - RZturbo 15:44:33 09/14/15 SZ map switcher is what I use. Install an ethanol gauge - puchy 16:43:33 09/14/15 But he has 850's and I don't believe that SZ has a - The Hawk 06:30:15 09/15/15 flex fuel sensor - LJZTT 18:26:05 09/14/15 You can understand. Can you read? - RZturbo 19:56:21 09/14/15 if it's my car, less PITA to replace the standalone once - LJZTT 22:29:45 09/14/15 Agreed 2000% (n/m) - ForceFedTT (SoCal) 00:39:54 09/15/15 This (n/m) - Antihero 13:21:56 09/15/15 need better standalone.. what ecu do you have? (n/m) - kickerzx 00:58:07 09/15/15 Yep. This is what I use with my Haltech. Just pump the E85 - ForceFedTT (SoCal) 00:38:29 09/15/15 Try to buy from the same station or "Station Brand" BTW.... - Spectrum (WI) 22:16:11 09/14/15 this is another huge reason not to go E85 only - LJZTT 06:12:04 09/15/15 Then order drums. Before people ran E85 for more - The Hawk 06:33:32 09/15/15 no one was advocating other people converting their cars - LJZTT 16:11:53 09/15/15 Some people thought the ethanol industry would - not4resaleZ 09:42:44 09/15/15 still propped up by fleet sales of domestics - LJZTT 16:24:04 09/15/15 A glide path needs to stop going up at some point. (n/m) - not4resaleZ 16:44:47 09/15/15 This site will help you search for your FlexFuel vehicle. - not4resaleZ 17:02:03 09/15/15 LMAO, because your local gas station and an entire - LJZTT 19:14:57 09/15/15 That site doesn't have a complete list of the vehicles. - ZiNnYc 20:04:30 09/15/15 I bet the blend changes even at the same station from time - MixManMash 06:41:07 09/15/15 It actually stores better than gas. (n/m) - not4resaleZ 09:45:03 09/15/15 That's been my experience as well. (n/m) - dogpile 10:00:26 09/15/15 Really? 4-6 months of storage? (n/m) - MixManMash 11:40:15 09/15/15 Days, weeks, months, even just over a year and no issues - dogpile 11:44:57 09/15/15 interesting... we run into ethanol phase separation - vorpalZ 11:56:51 09/15/15 I don't doubt that happens. But we've never had an issue - dogpile 13:14:48 09/15/15 Probably an issue of too much water for too little ethanol. - not4resaleZ 14:04:02 09/15/15 E10 is the worst for that problem.... - Greg D. (Specialty-Z) 18:40:34 09/15/15 ^2nd. Member Booztd 3 has been running ethanol - The Hawk 13:10:21 09/15/15 In cold climates the blend does change just like the - Greg D. (Specialty-Z) 18:58:02 09/15/15 I don't think there is any substitute for spending - not4resaleZ 10:37:25 09/15/15 Re: Ethanol content variation questions - BarryGZX 22:17:43 09/14/15 You'll need a gauge and a way to switch between maps - BlackholeZ 22:32:25 09/14/15 You are correct... - Bigwill837 07:29:34 09/15/15 You can easily go into ECU manager in Haltech and dial down - MixManMash 07:46:31 09/15/15 Yes sir... - Bigwill837 14:26:02 09/15/15 I have Haltech. But I don't use the built-in boost control - RZturbo 17:04:14 09/15/15 Re: I have Haltech. But I don't use the built-in boost control - Bigwill837 19:30:48 09/15/15 I was running a Ford boost solenoid but tossed it - RZturbo 20:46:27 09/15/15 You can run a potentiometer input on Haltech to dial down - MixManMash 23:09:22 09/15/15 I did use a 15k potentiometer. (n/m) - RZturbo 07:32:15 09/16/15 You match the first number of the ethanol content - not4resaleZ 09:59:55 09/15/15 At least that's how I talked them into putting my tunes - not4resaleZ 10:07:51 09/15/15 Re: You are correct... also if it's from yellow or - njz 10:34:31 09/15/15 Anything over E70 and you can run full boost..... (n/m) - The Hawk 13:15:32 09/15/15 What standalone do you have ? (n/m) - ztunerz 09:06:48 09/15/15 Most tuners will only tune to ~70% or so for that reason. (n/m) - dogpile 09:50:58 09/15/15 Watch it for a couple seasons and get an average %. - Lumpydonut 09:52:57 09/15/15 What MPG are you guys getting on E85? - RZturbo 17:09:28 09/15/15 If your only getting 12 MPG on gasoline.... - Greg D. (Specialty-Z) 18:35:47 09/15/15 Re: If your only getting 12 MPG on gasoline.... - RZturbo 21:01:06 09/15/15 re cal your widebands... (n/m) - ztunerz 16:30:04 09/16/15 Re: Ethanol content variation questions - bajan 22:25:08 09/18/15 That's quite interesting and disconcerting... - Ted (92TT) 19:55:58 09/22/15
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