E85 adds 70HP/TQ
 

Stage 1 tune

MS CAI2
TPMS TIP
Stock turbo
EGR delete
Turbosmart BPV
CS TMIC
MS CBE
Fuel pump
OEM Downpipe
Racepipe
Map sensor

From a 91 octane Freektune map to an E85 (E22 mix) tuned map, I gained 70HP. That is all.

That's pretty amazing for those mods. Excellent

Dynojet correction factor. See what a 1.01 correction factor comes up with.
Great gains.
I'm lucky enough to have an e30 pump close to home. Love the e.

dynojet CF = 1.09
so with CF = 1.01 you have about 315/370

CF 1.03

CF 1.01

Not sure which is more accurate.

CF=1.01 is the "de facto" correction factor for our cars.

Nice gains! gotta love E (especially since i am a corn farmer)



Iowa is the best isnt it! e30 everywhere now

I love how prevalent the e85 is here, but most e30 I can get (through coops) is mixed with 87. That's a no go usually. Need to mix with premium fuel. So I go to a kum&go and pump my e85, then pump my 91.

Yea but still gives it a 94.3 ron octane equivalent when mixed with 87 which is still good for me to run pretty aggressive timing. E85 is usually made with sub 85 octane gas. E30 is very common on this side of the state, most Cennex stations are starting to carry it and its wayyyy easier for me to find e30 than 91. Closest gas station to me with 91 is 40 miles away but im in bfe so thats also the closest walmart city.

All I know is the subi guys avoid our coops and mix their own. So I do the same. I believe the coop quality is much lower.

Thats a shame, ive got e30 from multiple different stations here and my ltft's dont really budge so that makes me think the fuel is consistent at least. Next time I head to Illinois ill have to stop through CR on my way and pick some up and have it tested at my school (ISU).

I keep posting this, but I'm a believer. If you can get Meth, 2 gallons per tank does better for me that E40ish mix I was on before.

Since I spray Meth, I only need to purchase one power fuel too :-)

Wish there was e30 around Clarksville TN

What? Like at least 4 gas stations have e85 around here man. Almost every mapco, and 1 or 2 others do.

Sent from my SP-G246279105748201337P

Mapco gas is garbage. And as for the e85 is it good e85? Or mixed with 87?

And im talking about e30. Not e85. Havent seen any 30 around the clarksville area

Hi @davychronic,

I've noticed you have some of my mods. Just wondering how much power your ride has. It may motivate me to go further when I save up more cash.

My modes are,

CS turbo
CS DP
CS Hi flow Cat
CS HPFP
CS MAP sensor
SU EBC
SU TMIC
COBB AP
DCR Actuator

The rest is bone stock
Attached is the power I'm getting with Ron 98. I may try E85 later on......

e30 only got me a few more ponies from being able to lean out my fuel curve but nonetheless thats all i run during the summer. Here is where i am currently at but a new build is coming in a month and precision 5862 going in.

Thanks,
Wow, looks like my next mod is internals.
If you don't mine me asking, your running your AFR mid 12's, is that because of the E30 or am I running mine too rich (11.61 AFR). I was told that running too rich robs away power.

someone told me 1.09 or dynojet was the best vd correction factor for ms6's

to acccount for drivetrain loss

I read it somewhere that it should be 1.01. I'm confused now.
Are we talking WHP or CHP.

Extensive testing in this platform tells us there is little or no gain from leaning mixtures at WOT (which is good to know, we can keep mixtures rich for cylinder cooling without loosing power).
Most gains from Ethanol are specifically to do with advancing ignition timing.

The dyno above also shows significantly higher boost in the ethanol tune which will account for some of the gains.

E85 adds 70HP/TQ
 

I gained around 10-15 hp on e30 compared to my 91 map because i was able to lean it out, same timing, same boost, same everything but the fuel curve. Im on meth is why im so close to 13. Leaner is meaner doesnt matter what car. I target 12.2 on e30 without meth.

E85 adds 70HP/TQ
 

We can test this theory at a dyno day in Des Moines if we can get enough people to go, you are probably about as far as I am from DSM.

@MRR; you can get the same hp just need to taper your boost curve to redline so you dont make as much torque. Keep torque below 400 especially below 4k rpm. On e30 without meth I think im able to get 24psi at 102%idc targeting 12.2 which is another advantage to leaning it out so you can get more psi on e30.

Anyways here is the same log at 1.09, 25 hp difference...

Good gain, but comparing an Ethanol mix to straight gasoline isn't really apple to apples.

This a graph is a good example showing 11 vs 11.5 vs 12.0 AFR on the same fuel:
12.0 AFR is the red line. This is by Justin at freektune.
http://cdn.shopify.com/s/files/1/029...grande.PNG?217

E85 adds 70HP/TQ
 

Im not necessarily just comparing 91 to e30. I gained power and later was able to run more boost leaning out my e30 with no meth map. I never tested leaning out 91 because its shitty fuel but gains can be had by leaning out e30

Fair enough, I'd be leaning it out too if I was running out of fuel up top.
Either way it's really nice being able to play with boost/timing/afr on an Ethanol mix without being hampered by knock.
'
Do you ever use meth at all?

E85 adds 70HP/TQ
 

Yea thats why im saying my e30 and 91 tunes are pretty much the same map because of meth but e30 lets me tune leaner. Love meth, highly recommended especially during the summer.

And if you plan to use meth like i do for aux fueling then do yourself a favor and get an ewg because it will spool so fast that it will bend rods if youre not careful. I had a pretty hard time controlling boost to where i have it now and it still creeps a little.

Read an article from Bosch engineers stating the magic WOT AFR for forced induction engines is between 12 to 12.5. Don't know if this applies to ours.

E85 adds 70HP/TQ
 

No i wouldnt trust that for our car. There are many factors that play into afr on every car. Maybe they are right from a chemistry stand point to get the most efficient burn from combustion but thats in the lean side for our cars depending on fuel quality. I think my 91 no meth map is like 11.6ish. Better fuel can give you abilty to tune leaner

I recalibrated my MAF a little leaner (98 octane) and found more power and torque to 5200 rpm, then after, it drops. Perhaps, the right thing to do is to slowly enrich AFR from 4500 rpm up. I'm a little scared of the big torque.
There are probably other factors such as weight and ambient temp. This is where fine tuning comes to play.

E85 adds 70HP/TQ
 

What i would do is slow your turbo down a little. Youre making a lot of torque at pretty low rpm. Set your boost targets a little lower below 4k rpm and set wgdc accordingly. I bent a rod at 4k rpm and 425ish torque on vdyno. Build boost progressive to redline and youll be fine. I know its fun to feel all that torque down low but its not fun tweaking a rod. It will also flatten your torque curve for a better powerband

Ill try to tune lower torque at lower rpm.
Currently I'm using load tune. Converted from boost tune to load tune last month. Learning heaps from this forum.

My E47 map feels like I gain that much horsepower just from the tune. Its incredible what ethanol does.

That's good.
What's E 47 MAP? is that 47% Ethanol? What's the mix ratio and what did you change in your MAP.

Its a 50/50 mix basically. Thats what I run on my car once in a while when i pass by the ethanol station. I rarely fill up so i rarely use that map but when i do i usually do it knowing I'm going to race somebody or go to the track. The MPG's i get are too shitty to justify using that map all the time.

looks like freek and corn are in my future

I am on a 4 Gallon E85 Mix with 91 octane Freektune and am making 380WHP
Of course with a BT and supporting MODS and no Meth. Very much like E85. Wondering how much more power meth would add. Getting ready to try meth or 5th port injection.

with 6th port or meth you could get to around 500 hp with that turbo.