Flex fuel and supercharger?

[sandwich14]

Originally Posted by nelsmar

Goodspeed in Scottsdale.

Thanks

[LBC Por Siempre]

Just a simple question, doesn't it take more E85 to equal straight gasoline?

Generally when the Porsche fellas convert to E85 they make it permanent. That usually requires a Larger Fuel Rail and higher input Injectors. So Gasoline has more of a stored power potential than the E85 brew.

Sorry for going too far off topic. Just trying to learn...

[LBC Por Siempre]

when I lived in the East Bay, San Pablo next to North Richmond - one of the Comptons of the East Bay since hou still have Parts of Oakland. That was fun I think I was the only whitey living withing 10 square miles. But you can't beat $300 rent for 1300 square foot studio on the second floor of some shops on Rumrill Blvd. Lucky my ex's uncle owned the entire building we lived in, in which he ran Car Garage out of the side where I would work a few hours of work each week.

But the ONLY place I saw selling E85 and also Bio-Diesel was on University as you were coming off or going back on the freeway, The 580/Eastshore Highway. As some of you may know that is the the street that goes directly up to the University of California or just CAL. Which many of us know as one of the RADICAL Schools in just about any subject in the US.

Further, a lot of people who live in the flatlands West of the school are pretty radical in conservatism and keeping the Earth alive and green.

Also, the Original version of the Prius, talking about the one Prius that shared the body style of another Toyota that evades my memory. I see sooooo many of the old Toyota Priuses there you would think there was some type of required quota. Toyota Echo is the name. If you see one in Berkeley its not an Echo, its a Prius.

Sorry for my ramblin' and TMI.

Tree.

[jamesm]

Originally Posted by LBC Por Siempre

Just a simple question, doesn't it take more E85 to equal straight gasoline?

Generally when the Porsche fellas convert to E85 they make it permanent. That usually requires a Larger Fuel Rail and higher input Injectors. So Gasoline has more of a stored power potential than the E85 brew.

Sorry for going too far off topic. Just trying to learn...

you do have to inject more fuel for a given mass of air when using e85, about 30% or so more. luckily we can switch back and forth easily since we can run as big of injectors as we like without the dd consequences, thanks to DI. no worry about idle quality or low speed fueling issues that some other platforms deal with when they use huge injectors.

[Sellout]

Originally Posted by LBC Por Siempre

Just a simple question, doesn't it take more E85 to equal straight gasoline?

Generally when the Porsche fellas convert to E85 they make it permanent. That usually requires a Larger Fuel Rail and higher input Injectors. So Gasoline has more of a stored power potential than the E85 brew.

Sorry for going too far off topic. Just trying to learn...

Lower energy density only means you get lower gas mileage. The power capability of running E-85 comes from two things:

1. Ethanol resists knock MUCH better than E-85s 104ish octane rating would suggest, meaning you can run more timing, more boost, etc.

2. You can burn more of it because you need a LOT less air for it to burn completely.

Nitromethane also has a lower energy density than gasoline. A lot lower, but you only need 1.7 lbs of air for a lb of nitro, compared with 14.7 lb of air for a lb of gasoline. So you can burn almost 9 times as much of it and that's where all the power comes from to run a quarter mile in 4 seconds

[jamesm]

ethanol is oxygenated as well of course, so the more you stuff in there the more you can burn.... you don't have to bring your own oxygen to the party, or at least that's how it was explained to me a while back.

[xjohnx]

Originally Posted by LBC Por Siempre

Just a simple question, doesn't it take more E85 to equal straight gasoline?

Generally when the Porsche fellas convert to E85 they make it permanent. That usually requires a Larger Fuel Rail and higher input Injectors. So Gasoline has more of a stored power potential than the E85 brew.

A lot of cars require larger injectors/fuel pumps/fuel rails to make E85 work in them because their stock fuel system aren't able to flow the additional 20-30% required to run E85.

However, the BRZ/FRS/GT86 has 8 injectors total (4 port injectors, and 4 direct injectors). Because of this, the FT86 can easily handle the extra flow required to run E85. At some point (depending on your tuner and their tuning strategy) you will need to upgrade your fuel pump and port injectors, but that's it. @DeliciousTuning has tuned a BRZ with stock fuel injectors on E85 to over 300WHP.

[Xero-Limit]

We've done this combo with no issues, and it works quite well. No different than for NA other than a bit less timing when on e85.

[DeliciousTuning]

Originally Posted by xjohnx

A lot of cars require larger injectors/fuel pumps/fuel rails to make E85 work in them because their stock fuel system aren't able to flow the additional 20-30% required to run E85.

However, the BRZ/FRS/GT86 has 8 injectors total (4 port injectors, and 4 direct injectors). Because of this, the FT86 can easily handle the extra flow required to run E85. At some point (depending on your tuner and their tuning strategy) you will need to upgrade your fuel pump and port injectors, but that's it. @DeliciousTuning has tuned a BRZ with stock fuel injectors on E85 to over 300WHP.

Actually getting close to 400whp on stock injectors, though still need to finalize that tune.

[xjohnx]

Originally Posted by DeliciousTuning

Actually getting close to 400whp on stock injectors, though still need to finalize that tune.

Can't wait to get back to my stock injectors from these DW 700's to feel the differences in both drivability and power.