Quote from: Josephm on March 08, 2014, 12:23:38 AM
Regardless 100% percent E85 has caused issues to the HPFP in the mazda 2.3 DI that ford designed. 50% seems to be the sweet spot where there is no issues.
The added benefit from E85 is it has more octane and burns cooler. On my laptop"(on wifes) i have a ethanol calculator from FoMoCo thread to show you the increased octane from mixes of E85
Different animal I was on full E85 with no problems with my HPFP as our pump is sealed, Mazda is not.
Some misinformation here from crash I need to address:
1. If you're getting 18 mph you're going to lose about 30% so you'd be around 12.6 MPG (I think around 6-8MPG in the V now on E85 but it's SO WORTH IT!)
2. It's more than the octane it's the ethanol content and the ability to cool the cylinders when it's sprayed, there's huge benefits to FI setup with E85.
I posted many technical documents about E85, running E85 in non E85 cars, power, tuning etc previously. There's also a ton of documentation on the web concerning it, heck even Ford prototyped a dual system, gas for fuel economy and E85 for times when at WOT for massive power increases.
I suggest you guys start doing the research on the topics, so much out there. Read up for a few days (or months like I did) and then revisit the idea.
In a nutshell, you can't run full E85 without at least the dual in tank pump setup, and that would only work on stock turbos.
You could run E48 (1/2 and 1/2 E85 and E10 regular gas mixed) on dual in tank pumps and stock DI setup, in my experience it will support around 500WHP.
You can mix to around E30 on stock turbos and a mild tune, E30 would be equivalent to driving around on 100 octane without having to pay the $7 a gallon I did.
I did run only 100 octane in my car for about 2 months ( I work from home so no DD required) and it was awesome, car LOVES octane but it loves E much better. Went from around 18 degrees of timing to 26 degrees on E85.
Long term to get big power and run E85 you'll have to go back to the aux injectors to make it happen, no way even with an upgraded DI pump and upgraded DI injectors to support 500 WHP on E85, not enough volume.
I wish we could figure out how to do a flex fuel sensor like my Caddy, if I put in E85 it reads it and adjusts timing/fuel automatically, put in 91 and it adjust again, any mix between E100 and E0 and the car knows via the sensor how much E content and will adjust. It's nice in case I'm on a trip and can't find E85 (wouldn't want to drive long distances on E85 - gas mileage in the V is horrible) but I do lose 50-60WHP on 91 octane so it's a tradeoff