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.

[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

[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.