Finally. EB's E85 Dyno Results

[GMRedline]

Ok guys here it is. Just to recap.

I converted to E85 and went to the dyno for a 3 pull.

Here are my mods:
M62 with 2.8" pulley
Custom Tube Inc Header/Downpipe w/ 1.75" Primaries and 3" collector
Magnaflow 2.5" Cat-back
Siemens 80# Fuel Injectors
HPTuners Custom Tune
Innovative Motorsports Wideband Sensor
K&N Drop In Filter
CX Racing Dual Pass Heat Exchanger
ZZP Dual Pass Endplate
GM Option B Kit

Here are the tune setups for my 3 runs:

Run 1 - 2.8" on 18 degrees of timing. (apples to apples to my 0TTP Stage 1 tune)
Run 2 - 2.8" on 25 degrees of timing.
Run 3 - 2.7" on 25 degrees of timing.

Here are the results compared to the 0TTP Stage 1 tune: SAE

Run 1 - 264whp 245wtq +7whp +7wtq
Run 2 - 278whp 255wtq +21whp +17wtq
Run 3 - 280whp 260wtq +23whp +22wtq

Apples to Apples Premium fuel vs E85SAE


All 3 RunsSAE


2 RunsSTD



Edit

TVS Results w/ 2.9" Pulley and 23 degrees of timing


TVS E85 vs Premium Comparison


E85 Seasonal Blend Changes:
Per federal (DOE) specifications E85 does change the % ethanol vs hydrocarbon by season. The purpose of this is to raise the Reid Vapor Pressure of the fuel for cold starts in flex fuel vehicles (FFV's)- this is done by increasing the % hydrocarbon (gas component) as colder temps are expected.

Here are the normal months changes begin to happen as one moves thru the seasons and the final blend % alcohol for Wisconsin's lattitude;

Sept 1st to Oct 31st - 78%
Nov 1st to March 31st - 70%
April 1st to May 15th - 78%
May 16th to Aug 31st - 83%

(% alcohol is stated in pure terms w/o denaturing gas-- thus the Summer E85 is 85% denatured ethanol but only 83.3% pure 200 proof booze). The months stated above will generally see changes happen near the first day of the month (except May and Sept) unless the weather is holding steady.

E85 - FAQs

[GMRedline]

Original thread.

EB is on E

Don't ask a question that was asked in that thread because I won't answer it.

New questions not answered from that thread.

Originally Posted by Darkmanx

if Thats the m62? dayum thats good . Well from apples to apples you gained 7 whp so thats good numbers, think the numbers would have been the same on meth?

Probably close. What do most people see on a 2.8" and meth? About 270?

Originally Posted by NCStateRedline

what were AFR's and IAT's looking like?

AFRs are between 11.2-11.5.

IAT2's hit 142 on the 2.8" and 145 on the 2.7". But that was on the dyno and the IAT2s started at 117 for both runs. On the street I would see 130-140.

Originally Posted by Darkmanx

Please note that run 1 was the only tRUE comparison.

True. I never pushed my 0TTP Stage 1 tune.

[GMRedline]

I used to use the same stoich fuel setting for gasoline for my E85 tunes. Mainly because I did not want to mess with my WB. I found an easy way to leave the WB setting alone and configure HPTs VCM scanner to log E85 and Dino fuel AFRs.

How to Configure VCM Scanner for E-85

This a very good article on E85 and different ethanol blends. MUST READ!!!

http://delphi.com/pdf/techpapers/2010-01-0619.pdf

[GMRedline]

Originally Posted by Darkmanx

good times . i dont think im quiet ready to do a overall of my fuel system yet , because i can run 25 degrees with no knock on the tvs as of now . your gonna max your 80 injectors soon but im glad your doing some r and d . Keep up the good work E

Thanks.

I could only get 19 degrees out of my TVS on the stock pulley and premium fuel (no meth). I am interested to see how it reacts to E85.

[GMRedline]

Originally Posted by Mattman6

What needs to be changed to run the 79's or 80's? Are they the same tune wise?

1#?

The 79s and 80s are different style injectors.

The 79s are conical (sp?) style injectors and the 80s are pencil style injectors. They have different fuel delivery styles.

[Mattman6]

oh ok yeah i read that somehwere...was just wondering if you knew much about tuning em

[GMRedline]

Originally Posted by Mattman6

oh ok yeah i read that somehwere...was just wondering if you knew much about tuning em

I know the Flow Map vs kPa settings for each injector.

The settings I have for the 80s may not be perfect. I had to figure those out on my own.

[laser_racer]

what a/f where you running on those pulls???

[GMRedline]

Originally Posted by GMredline

AFRs are between 11.2-11.5.

Which is about 7.44 afr converted to E85 lambda.

[laser_racer]

some how i am getting lost. i am probably just over looking something but in my eclipse i run 12.0 at wot. and rich is anything more then 11.0 and lean is 13.0 or greater. so i am lost somewheres here.