Vishnu

BT#2 · 04-20-2012, 02:39 PM

I've tried a 50/50 mix of e85 and 91 oct for a while and the car feels really great and snappy, but I'm getting cat efficiency codes which I don't really like...

So (Shiv), would it be possible to create a specific map for this purpose?

I really like that extra power @ higher rpm's which the e85 provides!

My logs looks great, but for some reason I get cat efficiency codes...

OpenFlash · 04-20-2012, 02:46 PM

Funny you mention that. Yesterday I tested an 80/20 mix of e85/gasoline and the low pressure fuel pump died within 10min. Not sure if it's a coincidence or not. If not, Id be hesitant to run any stronger mix of e85. More testing really needs to be done.

BrianMN · 04-20-2012, 02:57 PM

I've played around with 2:1 Gas: E85 and felt the extra zip that it provided. I had been running this mix for close to a month...

To alleviate the maxed out fuel trims, I made my own OL Fueling maps and got very good results and logs at WOT.

The problem is- with so much fuel I was having issues with the getting the transition periods ironed out. It simply wasnt' smooth and had a couple hiccups going from say 25% TPS to WOT.

That said, with the right amount of testing (and testing by someone more experienced in tuning than me), I don't see why we couldn't have a nice map. I wouldn't expect it to have the driveability of the V5 maps (or even the V4 maps for that matter)

I coudl send you the map i created if you'd like to see it...

BT#2 · 04-20-2012, 02:58 PM

Quote:

Originally Posted by shiv@vishnu

Funny you mention that. Yesterday I tested an 80/20 mix of e85/gasoline and the low pressure fuel pump died within 10min. Not sure if it's a coincidence or not. If not, Id be hesitant to run any stronger mix of e85. More testing really needs to be done.

Hmm... That's strange because I know a couple of guys that have been running various mixes of e85 for quite some time now...

RnmEvo9 · 04-20-2012, 03:01 PM

Quote:

Originally Posted by shiv@vishnu

Funny you mention that. Yesterday I tested an 80/20 mix of e85/gasoline and the low pressure fuel pump died within 10min. Not sure if it's a coincidence or not. If not, Id be hesitant to run any stronger mix of e85. More testing really needs to be done.

80% e85 with 20% gasoline is a bit too much. Try 50/50 next time as I ran that combo for over 8 months with no issues.

BrianMN · 04-20-2012, 03:05 PM

Quote:

Originally Posted by RnmEvo9

80% e85 with 20% gasoline is a bit too much. Try 50/50 next time as I ran that combo for over 8 months with no issues.

I think he meant to say 80% gas, 20% E85....

OpenFlash · 04-20-2012, 03:16 PM

Nope... i meant 80% E85 and 20% gasoline

The idea was to eventually make straight e85 tune. But if running that much e85 can quickly lead to pump failure, running a weaker mix would likely do the same over a longer period of time. But I don't want to say for sure that was the cause of the failure. Might have just been a coincidence.

Shiv

TurboSid · 04-20-2012, 03:19 PM

i can vouch for rnmevo running e85.. he forgot he bought a bmw and continued using e85 from his evo

RnmEvo9 · 04-20-2012, 03:20 PM

Quote:

Originally Posted by shiv@vishnu

Nope... i meant 80% E85 and 20% gasoline

The idea was to eventually make straight e85 tune. But if running that much e85 can quickly lead to pump failure, running a weaker mix would likely do the same over a longer period of time. But I don't want to say for sure that was the cause of the failure. Might have just been a coincidence.

Shiv

Props for exploring the idea of running a straight e85 tune.

OpenFlash · 04-20-2012, 03:25 PM

Quote:

Originally Posted by RnmEvo9

Props for exploring the idea of running a straight e85 tune.

lol thanks. It's quite easy assuming no hardware compatibility issues. We did it with an evo back in 2007 for Mitusibishi. Worked great. Makes a lot more power than race gas as you know. Probably explains why it's so popular in high boost/small displacement applications.

Shiv

brakeboost · 04-20-2012, 03:41 PM

When I 2step on e85 mix that's when I get the huge flames and the cops called for multiple shots fired.

I don't really notice any difference in acceleration or top rpm power.

E90SoFlo · 04-20-2012, 03:46 PM

I want flames =( lol

805beemer · 04-20-2012, 05:04 PM

Quote:

Originally Posted by shiv@vishnu

Funny you mention that. Yesterday I tested an 80/20 mix of e85/gasoline and the low pressure fuel pump died within 10min. Not sure if it's a coincidence or not. If not, Id be hesitant to run any stronger mix of e85. More testing really needs to be done.

Was this on the single turbo car? If so I thought your secret fueling upgrade would have helped. Oh well

OpenFlash · 04-20-2012, 05:17 PM

Quote:

Originally Posted by 805beemer

Was this on the single turbo car? If so I thought your secret fueling upgrade would have helped. Oh well

Nope... Not on the single turbo car.

805beemer · 04-20-2012, 05:24 PM

Kudos for trying but I figured someone with your knowledge would have known a car without a fueling upgrade wouldn't run correctly on that high a % of e85. You should give it a shot on your single turbo and that way we would know if your fueling upgrade is working.

OpenFlash · 04-20-2012, 05:39 PM

Quote:

Originally Posted by 805beemer

Kudos for trying but I figured someone with your knowledge would have known a car without a fueling upgrade wouldn't run correctly on that high a % of e85. You should give it a shot on your single turbo and that way we would know if your fueling upgrade is working.

We have run straight e85 on a number of other platform (Evo, suby, Porsche, etc) with nothing more than an injector upgrade. There is nothing obvious that says it cannot be made to work on the n54 as the DI injectors can easily support the extra flow demands.

805beemer · 04-20-2012, 05:56 PM

I agree that the injectors should have enough room to support 100% e85. But what about the HPFP and LPFP. Thats where I'm guessing the n54 would have problems, and might be why the LPFP died on the car you tested. So thats why I said you should try it on your single turbo with the fueling upgrade. I'm sure there would be tons of people who would love to run 100% e85 if your fueling upgrade would allow them to do so.

BT#2 · 04-20-2012, 06:02 PM

Shiv ---> What do you think causes the cat efficiency codes?

...and how do we avoid them?
I mean, the logs looks perfect. AFR and timing is in absolute top shape.

This is with my Big Tom map from January 2011.

The Ghost · 04-20-2012, 08:34 PM

I would definitely prefer e85 to meth. Let's do some more testing.

Fred_Boosted · 04-20-2012, 08:40 PM

Quote:

Originally Posted by The Ghost

I would definitely prefer e85 to meth. Let's do some more testing.

+11111111111111111111

Subed!

Shiv, you guys are always the first one trying the things people wanted to!

OpenFlash · 04-20-2012, 09:23 PM

Update:
Our 6at test car is now up and running on straight e85. Making good power. Will be giving rides in it tomorrow during our open house

Dmacc · 04-20-2012, 10:13 PM

Quote:

Originally Posted by shiv@vishnu

Update:
Our 6at test car is now up and running on straight e85. Making good power. Will be giving rides in it tomorrow during our open house

What time is best to get there?

04-20-2012, 02:39 PM	#1
BT#2 Banned 9 Rep 118 Posts Drives: 335i n54 e92 MT Join Date: Feb 2012 Location: Sweden iTrader: (0)	Vishnu - Dedicated e85 map? I've tried a 50/50 mix of e85 and 91 oct for a while and the car feels really great and snappy, but I'm getting cat efficiency codes which I don't really like... So (Shiv), would it be possible to create a specific map for this purpose? I really like that extra power @ higher rpm's which the e85 provides! My logs looks great, but for some reason I get cat efficiency codes...
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04-20-2012, 02:57 PM	#3
BrianMN Banned 117 Rep 2,428 Posts Drives: 4 Door Family Sedan Join Date: Sep 2009 Location: Minneapolis iTrader: (7)	I've played around with 2:1 Gas: E85 and felt the extra zip that it provided. I had been running this mix for close to a month... To alleviate the maxed out fuel trims, I made my own OL Fueling maps and got very good results and logs at WOT. The problem is- with so much fuel I was having issues with the getting the transition periods ironed out. It simply wasnt' smooth and had a couple hiccups going from say 25% TPS to WOT. That said, with the right amount of testing (and testing by someone more experienced in tuning than me), I don't see why we couldn't have a nice map. I wouldn't expect it to have the driveability of the V5 maps (or even the V4 maps for that matter) I coudl send you the map i created if you'd like to see it...
	Appreciate 0 Quote

04-20-2012, 03:16 PM	#7
OpenFlash 1809 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Nope... i meant 80% E85 and 20% gasoline The idea was to eventually make straight e85 tune. But if running that much e85 can quickly lead to pump failure, running a weaker mix would likely do the same over a longer period of time. But I don't want to say for sure that was the cause of the failure. Might have just been a coincidence. Shiv
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04-20-2012, 03:19 PM	#8
TurboSid Brigadier General 1155 Rep 3,269 Posts Drives: 2022 M4Cx BSM/FR Join Date: Apr 2008 Location: Florida iTrader: (4) Garage List 2008 335i [0.00]	i can vouch for rnmevo running e85.. he forgot he bought a bmw and continued using e85 from his evo __________________ 2022 BSM/FR M4 Competition X-Drive 2017 MW/SO M4 ZCP [SOLD] • 2015 MW/SO M4 M-DCT FBO [SOLD] • 2011 AW/CR 335is DCT FBO [SOLD] • 2008 AW/CR 335i 6MT FBO [SOLD]
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04-20-2012, 03:41 PM	#11
brakeboost Private 5 Rep 81 Posts Drives: 2007 bmw 335i Join Date: Dec 2011 Location: springfield, mo iTrader: (1)	When I 2step on e85 mix that's when I get the huge flames and the cops called for multiple shots fired. I don't really notice any difference in acceleration or top rpm power.
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04-20-2012, 02:46 PM	#2
OpenFlash 1809 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Funny you mention that. Yesterday I tested an 80/20 mix of e85/gasoline and the low pressure fuel pump died within 10min. Not sure if it's a coincidence or not. If not, Id be hesitant to run any stronger mix of e85. More testing really needs to be done.
	Appreciate 0 Quote

04-20-2012, 03:46 PM	#12
E90SoFlo Banned 217 Rep 2,669 Posts Drives: E90 335i Join Date: Jun 2011 Location: Naples, FL iTrader: (9)	I want flames =( lol
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04-20-2012, 05:24 PM	#15
805beemer Captain 23 Rep 647 Posts Drives: 2008 135i Join Date: Jul 2011 Location: Lompoc, CA iTrader: (4)	Kudos for trying but I figured someone with your knowledge would have known a car without a fueling upgrade wouldn't run correctly on that high a % of e85. You should give it a shot on your single turbo and that way we would know if your fueling upgrade is working.
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04-20-2012, 05:56 PM	#17
805beemer Captain 23 Rep 647 Posts Drives: 2008 135i Join Date: Jul 2011 Location: Lompoc, CA iTrader: (4)	I agree that the injectors should have enough room to support 100% e85. But what about the HPFP and LPFP. Thats where I'm guessing the n54 would have problems, and might be why the LPFP died on the car you tested. So thats why I said you should try it on your single turbo with the fueling upgrade. I'm sure there would be tons of people who would love to run 100% e85 if your fueling upgrade would allow them to do so.
	Appreciate 0 Quote

04-20-2012, 06:02 PM	#18
BT#2 Banned 9 Rep 118 Posts Drives: 335i n54 e92 MT Join Date: Feb 2012 Location: Sweden iTrader: (0)	Shiv ---> What do you think causes the cat efficiency codes? ...and how do we avoid them? I mean, the logs looks perfect. AFR and timing is in absolute top shape. This is with my Big Tom map from January 2011.
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04-20-2012, 08:34 PM	#19
The Ghost Reborn 89 Rep 1,217 Posts Drives: 335i Join Date: Jun 2011 Location: USA iTrader: (1)	I would definitely prefer e85 to meth. Let's do some more testing.
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04-20-2012, 09:23 PM	#21
OpenFlash 1809 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Update: Our 6at test car is now up and running on straight e85. Making good power. Will be giving rides in it tomorrow during our open house
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