200whp for ~$1000 - Page 8 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jeebus · 11-18-2013, 05:23 PM

Quote:

Originally Posted by shiv@vishnu

If you run your gasoline down to E (so at least the low fuel light comes on) and then fill up with E85, you will be golden. Over the next few days I'm going to test how sensitive/tolerant the tune is to e85/gasoline mixes. I suspect it will be happy with running a few gallons of gasoline in there because straight E86 is overkill as far as octane/cooling go. I will report my findings.

Shiv

When my tank hits the E mark and low fuel light comes on, it only takes around 10, sometimes 10.5 gallons to fill to the top. The tank is 13.2 gallons, so there could be 3 full gallons of gasoline in the tank at that time. Assuming the corn juice you fill up with is 100% e85, that would net you something more like e68. If the corn juice is e70 you'd be down to e56. I did this based on using gasoline with 10% alcohol content already.

Shiv@Openflash · 11-18-2013, 05:44 PM

Quote:

Originally Posted by jeebus

When my tank hits the E mark and low fuel light comes on, it only takes around 10, sometimes 10.5 gallons to fill to the top. The tank is 13.2 gallons, so there could be 3 full gallons of gasoline in the tank at that time. Assuming the corn juice you fill up with is 100% e85, that would net you something more like e68. If the corn juice is e70 you'd be down to e56. I did this based on using gasoline with 10% alcohol content already.

That's totally fine. Doesn't need to be e85. I've gone as low as e65 without any issue. I'm going to test even lower this week.

jeebus · 11-18-2013, 06:16 PM

Quote:

Originally Posted by shiv@vishnu

That's totally fine. Doesn't need to be e85. I've gone as low as e65 without any issue. I'm going to test even lower this week.

Good to know.

Do you put the e85 in and then drive slowly and do some mini slaloms to mix the fuel up?

Can't wait to try it.

Luckrider · 11-18-2013, 10:33 PM

New e85 maps available: E85 Thread

Robert@Openflash · 11-26-2013, 12:45 PM

Enjoy your drive back down to SD. Its too bad I wasn't able to meet you in person. Next time!!!!

Quote:

Originally Posted by Sojhinn

If it's any conciliation you guys are making my drive from sf to San Diego awesome.

Sojhinn · 11-26-2013, 12:49 PM

Quote:

Originally Posted by Robert@vishnu

Enjoy your drive back down to SD. Its too bad I wasn't able to meet you in person. Next time!!!!

Definately! Shiv pretty much convinced me for that header. I want!

Td-d · 11-26-2013, 01:04 PM

Quote:

Originally Posted by shiv@vishnu

Yes. Changes rpm breakpoints and set last row equal to 0 deg. I suppose to the uninformed that could look like an error in table address. Perhaps this is the reason behind Visconti's comment?

Bingo. I've compared the addresses to the rom, nothing's out of place.

mid_life_crisis · 11-26-2013, 01:09 PM

Quote:

Originally Posted by shiv@vishnu

Yes. Changes rpm breakpoints and set last row equal to 0 deg. I suppose to the uninformed that could look like an error in table address. Perhaps this is the reason behind Visconti's comment?

Oh, you are good.

Shiv@Openflash · 11-26-2013, 01:10 PM

Quote:

Originally Posted by Td-d

Bingo. I've compared the addresses to the rom, nothing's out of place.

Thanks for the confirmation Td-d. When putting together these XDFs I do everything visually/manually through string searches and pattern finding. So I'm always open to the possibility of there being errors. But I do test the maps out quite thoroughly so I found it surprising that Visconti would uncover something unexpected. But I'd like to thank him and the Ecutek community for bringing what *he thought* was a error to the attention of the community (if not myself)

Best Regards,
Shiv

Td-d · 11-26-2013, 01:22 PM

So, storm in a teacup aside

, I find it interesting that you've opted for an ignition cut based approach, as opposed to a requested torque tapering (the other method I've seen in action). Any advantage, or just coming at the problem from a different angle?

Shiv@Openflash · 11-26-2013, 01:29 PM

Quote:

Originally Posted by Td-d

So, storm in a teacup aside

, I find it interesting that you've opted for an ignition cut based approach, as opposed to a requested torque tapering (the other method I've seen in action). Any advantage, or just coming at the problem from a different angle?

Just a different angle. With this approach I can induce what appears to be a soft limit that slowly transitions to a hard fuel cut if you stay on the throttle for another 2-3 seconds. I do like to keep throttle open as much as possible (hence the ignition only cut). Perhaps this a personal bias from all the turbo tuning we have done (don't want to dump that precious boost!)

yuicebox · 11-26-2013, 01:33 PM

@Visconti is this what you were referring to? Seems like a misunderstanding

Sent from my SAMSUNG-SM-N900A using Tapatalk

Sojhinn · 11-26-2013, 01:53 PM

Btw- esc 223hp / 200 tq on e85. Muhahahaha!

continuecrushing · 11-26-2013, 04:39 PM

Hooray!!!!!!

11-26-2013, 01:53 PM	#111
Sojhinn Lightning McQueen Driver Join Date: May 2012 Drives: Limited Red 6MT BRZ Location: San Diego Posts: 2,242 Thanks: 753 Thanked 1,167 Times in 644 Posts Mentioned: 77 Post(s)	Btw- esc 223hp / 200 tq on e85. Muhahahaha! __________________ Nicknamed Lightning by my Kids. Installed Mods: Phantom Electric Super Charger \| Open Flash Tune \| Perrin OP/ HFC Front pipe \| Invidia Q300 catback \| ST Suspension \| JDL Header \| Flex Fuel

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