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nelsonmg nelsonmg is offline
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Default basics for e85 - 05-07-2013, 02:46 PM

can someone please explain the basics of running e85.

i have intercooler, *********, intake, jb4 g5iso. do i need anything else? any prep-work or post-work?

can i just dump certain% of e85 into take and i am ready to roll? if so, what percentage is good starting point?

thanks in advance.


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Default 05-07-2013, 02:53 PM

What you need for E85:

1) JB4
2) E85 gas station
3) Datalogs
4) ???

Start with say 30% or so. I dunno, maybe put in 4 gallons to a full tank. Do some runs in map 5, try to avoid brown pants, post logs and CSV's here. If everything is kosher, go to 50% E85, maybe like 6-7 gallons to a full tank. Do some runs in map 5, try to avoid getting sexually excited with the windows down, post logs and CSV's here. FBO with 50/50, you may need the LPFP upgrade (that would be 4 and the ???'s). That's what the logs will tell you.

Ohh, and
5) Profit.
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justohigh justohigh is offline
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Default 05-07-2013, 02:57 PM

Quote:
Originally Posted by nelsonmg
can someone please explain the basics of running e85.

i have intercooler, *********, intake, jb4 g5iso. do i need anything else? any prep-work or post-work?

can i just dump certain% of e85 into take and i am ready to roll? if so, what percentage is good starting point?

thanks in advance.
You have everything you need to run 50% and lower of E85. It's suggested to start off with 30% E85, since every car is different and reacts differently to E85. If that works out, then increase to 40% and then 50%. Make sure to put it on map 5 and do your 3 3rd gear pulls for it to auto tune. Buckle up The power increase is like when you just put the JB4 on your stock 335.
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nelsonmg nelsonmg is offline
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Default 05-07-2013, 03:31 PM

thanks gentlemen.


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Default 05-07-2013, 06:02 PM

This might be a no brainer to some, but I'll say it anyway. Drive the car around for 10-15 minutes before you start ripping 3rd gear and allow the ethanol to mix with the 93 and make its way from the tank to the motor. This is especially crucial for anyone running Cobb since you are switching maps and there is no auto tune like JB4.


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Default 05-07-2013, 10:04 PM

are you guys seeing much of a performance difference going from a 30% mix to a 50%?


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Default 05-07-2013, 10:44 PM

has anyone ever tried 100% e85... is it possible???


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Default 05-07-2013, 10:46 PM

or is it not a good thing to do?? i have stations by be that have 115 octane race fuel and have so whanted to try it but dont want to damage anything


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shaunlsone shaunlsone is offline
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Default 05-07-2013, 10:51 PM

with just a jb4 and dci kit what is the rwhp gains on running 40%e95 with 93oct??
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Default 05-07-2013, 10:54 PM

Past E50 has fewer gains but it never hurts. As for straight E85 it's possible yes but depending on your setup and goals is going to cost much more to pull off. You're talking lpfp upgrade, hpfp upgrade, backend flash, etc. E50 is achievable for many on the jb4 alone.

Just try to use unleaded race fuel, the leaded stuff you can use but you may be looking at O2 sensors prematurely. Otherwise race gas is safe.
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Default 05-07-2013, 10:57 PM

I was just asking because i have a car that is e85 comparable and it is SOOOO much more powerful with 100% e85 that normal 93 octane. I guess i need to do some more research about e85 but what is the difference? is it worth it? should anyone try it? a lot of questions...


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Default 05-07-2013, 10:59 PM

Quote:
Originally Posted by v8bait
Past E50 has fewer gains but it never hurts. As for straight E85 it's possible yes but depending on your setup and goals is going to cost much more to pull off. You're talking lpfp upgrade, hpfp upgrade, backend flash, etc. E50 is achievable for many on the jb4 alone.

Just try to use unleaded race fuel, the leaded stuff you can use but you may be looking at O2 sensors prematurely. Otherwise race gas is safe.
this is right on, per usual... Just installed the in-line LPFP upgrade and flash and saw some dips in the HPFP on 100% E85. I'm now close to 75% and plan to log tomorrow!

When I would run 50% E85 before the pump upgrade and flash, my low-pressure would dip but I was still able to maintain high pressure.


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Default 05-07-2013, 11:09 PM

damn thats a lot of work... i have been so tempted to just do a complete over haul over my entire engine (blueprint, rods pistons, block, all external accs) so much work tho damn lol


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Default 05-07-2013, 11:10 PM

i guess i just want the best sleeper in the area.. i already have people in mustangs and camaro that think they are going to destroy me get their butts handed to them... i wanna own GT500's and ZR1's even GTRs if possible


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Default 05-07-2013, 11:14 PM

Quote:
Originally Posted by AWil335i
this is right on, per usual... Just installed the in-line LPFP upgrade and flash and saw some dips in the HPFP on 100% E85. I'm now close to 75% and plan to log tomorrow!

When I would run 50% E85 before the pump upgrade and flash, my low-pressure would dip but I was still able to maintain high pressure.
I saw the same thing.

Bimmer- I am willing to bet your last car on 100% E85 was port fueled. Direct Injection is much different, and with E50 you can suppress knock better than straight E85 on a port fueled car. Although we are also running more compression than one of those typically runs, but it's not an apples to apples comparison. You only need as much E85/octane as the conditions/tune/hardware require. Anything more is just extra safety with little benefit.
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Default 05-07-2013, 11:17 PM

Thats good to know.. i have just wanted to beet one person in my area... a 1300hp 90s toyota supra.. i NEED some major power improvements.... not sure that i can do anymore lol


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Default 05-08-2013, 11:41 AM

I gained about 75hp and 150tq at the crank going from stock to jb4 map 5 with just DCI and 30% E85 blend.

Run 1 is with DCI

E85 torque curve very smooth.

I was watching the boost levels in real time and it only hit 17psi very briefly once so there was still some room to grow on the autotune map.

I'm running roughly 40% E85 blend now with no problems except rough start-ups sometimes.

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Default 05-09-2013, 07:51 AM

Quote:
Originally Posted by BimmerNFS
Thats good to know.. i have just wanted to beet one person in my area... a 1300hp 90s toyota supra.. i NEED some major power improvements.... not sure that i can do anymore lol
You should look into the Vargas stage 3 stuff and a built motor and nitrous, plus ALL the supporting mods on a 6mt. I mean 1300hp is no joke. Gonna take more than fbo and e85 to take that if he's hooking up and in kill mode.
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justohigh justohigh is offline
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Default 05-09-2013, 04:47 PM

There is no 335i in the world that can touch a 1300hp supra. If you are looking to beat cars of that caliber, then you should be looking into a different platform (for now atleast). 2013 gt500's, GTR's, ZR1's is going to take upgraded turbo's like VTT stg. 3, but with mods those cars are also in a different league.
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Young_Man Young_Man is offline
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Default 05-09-2013, 05:37 PM

This is the same as E85 right? I'm thinking about placing an order...

http://www.dragzine.com/news/vp-raci...l-racing-fuel/

Last edited by Young_Man; 05-09-2013 at 05:43 PM..
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smolik smolik is offline
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Default 05-09-2013, 06:12 PM

Quote:
Originally Posted by shaunlsone
with just a jb4 and dci kit what is the rwhp gains on running 40%e95 with 93oct??
I put down 270whp/270tq stock. 370whp/430wtq tuned.
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nelsonmg nelsonmg is offline
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Default first wot run - 06-09-2013, 05:48 PM

filled up w/ 4gal of e85 then filled up w/ 93. only had time for 1 wot run but from what i can tell things felt and look pretty decent. anyone have any thoughts. log below.
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Default 06-09-2013, 06:41 PM

Timing is low still, either due to not enough octane still or not enough adaption runs. I'd try to do at least 2 or 3 WOT runs in 3rd or 4th, then take the log.

Regardless, there's room in it for a stronger mix as fuel pressure is fine and FP mapping is 82 (out of 100 max). Maybe next time try 5-6 gallons to a full tank. Logs are otherwise normal.

How does it feel?
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Default 06-09-2013, 09:15 PM

Quote:
Originally Posted by Young_Man
This is the same as E85 right? I'm thinking about placing an order...

http://www.dragzine.com/news/vp-raci...l-racing-fuel/
I think is meant to be a "better" version of e85. But from my limited online research it seems expensive? ie $7/gallon. Did you get pricing on it?


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MasterWang MasterWang is offline
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Default 06-09-2013, 10:07 PM

I may be completely wrong here, but I always assumed these were my numbers

93oct using map1 or map5 = 340hp
50% e85 + 93oct using map 5 = 390hp
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