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Old 07-23-2009, 06:53 PM   #1
thorne
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Default 2003 WRX vf39 93 VS e85




I finally got on the rollers. The e85 vs 93 at similar boost impressed the hell out of me. I want to thank ITPEric for giving me some feedback and IPS for donating the dyno time to see how subarus took to e85. I'm happy to say quite well.


If you notice the afr was being adjusted quite a bit. I need to sit down with TY again and scale the MAF some more. I left some power on the table I'm pretty sure but can you really complain when your 2.0 makes 330wtq?

I know allot of people have asked or had a intrest in E85. After running it I will say its definitely worth it.

I picked up 37hp and over 48ftlbs at the wheels. It's like having a bigger turbo with out the lag.
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Old 07-23-2009, 06:56 PM   #2
cszink
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Thanks for the info and chart...I was pretty curious about this myself.
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Old 07-23-2009, 06:58 PM   #3
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Quote:
Originally Posted by thorne View Post
If you notice the afr was being adjusted quite a bit. I need to sit down with TY again and scale the MAF some more.
So did you not scale the MAF correctly on 93 octane?

You shouldnt be using the MAF to change the AFR.
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Old 07-23-2009, 07:27 PM   #4
thorne
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No I got a ebay intake and had not finished scaling it. The stock intake was maxed out.

Also you do scale the maf is your correction is off which will cause you afr to be off.

Last edited by thorne; 07-23-2009 at 07:32 PM.
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Old 07-23-2009, 07:37 PM   #5
Lboogie
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Did you run a full tank of E85 or enough to bring the avg octane to ~100?
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Old 07-23-2009, 07:39 PM   #6
4drcivicmaster
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very nice! i am doing the same setup with an ewg and a vf48. i hope to hit atleast 310whp with them. this gives me hope.lol and it's also going to be on a dynojet.
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Old 07-23-2009, 07:54 PM   #7
thorne
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I run 100% e85
Modded Stockers
Walbaro
vf39
up/down/catback
halman mbc
ebay tmic (NEVER AGAIN)
ebay intake (Junk)

Thats my power mods.
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Old 07-24-2009, 12:11 AM   #8
4drcivicmaster
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stock clutch holding alright??
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Old 07-24-2009, 08:34 AM   #9
thorne
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The stock clutch did not hold up to 280wtq. I'm running a southbend stage 4.
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Old 07-24-2009, 08:56 AM   #10
STi Mikey
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Quote:
Originally Posted by thorne View Post
The stock clutch did not hold up to 280wtq. I'm running a southbend stage 4.
I have to say that you have one terrific graph there!! This is what a vf39 graph should look like, and you see very few of them. Holding 315 at 7k on a dyno jet is awsome. Even your pump map looks great in the higher RPM range.

This proves if your not afraid to run a good amount of timing those 50-75 whp vf turbo fall offs can be prevented. Who tuned your car? Great job who ever did
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Old 07-24-2009, 09:11 AM   #11
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what is your boost at? ..nvm 23 psi thats nice!

That torque curve is beautiful for the 39
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Old 07-24-2009, 09:14 AM   #12
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nice numbers!
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Old 07-24-2009, 11:13 AM   #13
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Quote:
Originally Posted by STi Mikey View Post
Who tuned your car? Great job who ever did
+1234
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Old 07-24-2009, 12:39 PM   #14
thorne
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I tuned the car. I had a few pointers from ITPEric and another tuner with experiance with E85.
the 93 octane is only running about 3 less degrees timing. After playing with thefoos timing tables I got a good feel what E85 likes and don't likes. You can have to much timing that does not knock but does not add power. I found this to be the case in a few spots.

This tune is honestly a mess to look at in the map. I've got a few hacks in place to get around my scaling issue just so i could see what the car did at the desired AFR. But this will be cleaned up on the street using the LC-1 and some help from willaty.

Once I clean up the map I will post it up for people to see.

I do have to give Master2192 some credit since with out all his help years ago I would not have been able to do this.

RIP SEAN

Last edited by thorne; 07-24-2009 at 03:13 PM.
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Old 07-24-2009, 08:18 PM   #15
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very nice man! im not too familiar with the differences in dynos, how would you say the dynojet compares to airboys spreadsheet? the SS seems to put out very close to a mustang dyno i guess.
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Old 07-24-2009, 08:22 PM   #16
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What kind of timing are you running at peak torque (highest load) and redline on E?


-Jerod
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Old 07-24-2009, 08:34 PM   #17
elevenpoint7five
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Quote:
Originally Posted by JSarv View Post
What kind of timing are you running at peak torque (highest load) and redline on E?


-Jerod
im curious about this too. jerod, what are you running in those areas as well? i have a feeling im not running nearly enough. OP makes so much TQ! i made 310/259 on airboys spreadsheet with a 2.0, vf39, and E85. im obviously doing something wrong! haha!
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Old 07-24-2009, 08:38 PM   #18
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15-16@ peak torque and 25-27@ redline


-Jerod
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Old 07-24-2009, 09:02 PM   #19
thorne
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I'm running 16 pk tq 23-24 at redline.

11.5 obsesrved on lc-1 ( I have it in gas btw)
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Old 07-24-2009, 09:06 PM   #20
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14-15 at peak tq and 26-27 at redline... im only hitting 20 psi though, it just doesnt want to make more, i think i have a torn inlet. and my wbo2 died last weekend so AFRs still arent perfect(i HATE injector scaling). but still, hes making SO much more tq than i am!

side note, i found a thread on an e85 forum where you(jerod) talked about different latencies, im going to give that a try when my new sensor gets here. thanks! mine are about .05-.1 lower than what you posted up that worked for WH modded stockers with E. the heavier fuel thing makes sense.
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Old 07-24-2009, 09:23 PM   #21
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Quote:
Originally Posted by thorne View Post
I'm running 16 pk tq 23-24 at redline.

11.5 obsesrved on lc-1 ( I have it in gas btw)
Did you stop making power up top with more timing?

Have you tried leaning it out any?

I run mid 11's as well - most recommend leaner but I have found absolutely NO power gains or losses running it leaner - so I run it a bit richer and live with it.

-Jerod
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Old 07-25-2009, 06:27 AM   #22
thorne
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yes I tried going leaner. I did not make any power. I actually lost it. I went richer and bam power back. The car no obsereved knock or anything. It just made more power when I was richer.

I added some timing up top and did not see any real change
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Old 07-25-2009, 09:56 AM   #23
JSarv
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Quote:
Originally Posted by thorne View Post
yes I tried going leaner. I did not make any power. I actually lost it. I went richer and bam power back. The car no obsereved knock or anything. It just made more power when I was richer.

I added some timing up top and did not see any real change
figured... I see a bit but nothing overwhelming...

It seems to be a smoother pull running a bit rich as well
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Old 07-25-2009, 10:09 AM   #24
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wow i got same mods minus e85 and i made way less power ???? here is my graph here i dont know how to read but i know one includes a before and after

http://www.cardomain.com/ride/3034097/4
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Old 07-25-2009, 10:32 AM   #25
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Yours is on a mustang dyno Not all dynos read the same.
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