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07-18-2019, 02:03 PM | #8851 | |
Scooby Specialist
Member#: 163648
Join Date: Nov 2007
Chapter/Region:
MWSOC
Location: Xona 78•64 UHF
Vehicle:2002 WRX V9 6mt R180 Brembos |
Quote:
https://www.instagram.com/p/BheIos-FYE-/
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07-18-2019, 04:25 PM | #8852 |
Scooby Newbie
Member#: 121212
Join Date: Jul 2006
Chapter/Region:
SWIC
Vehicle:2007 Sti Limited Urban Gray Metallic |
I have to drive into Vegas to get my E85 so I buy 50-100 gallons at a time and keep it in my shed. When I buy it it tests about 80-85% but after sitting in my shed for 6 months it's now 90%. So for some reason the gasoline is evaporating and the ethanol is staying behind. (best guess) I'm storing the fuel in High-density polyethylene jerry cans. (https://www.uline.com/Product/Detail...Gallon-Natural) I've tested this for 3 years now and it's always the same results. I also use the stabil for ethanol fuel stabilizer if that has any effect I don't know. Next time I'll test before and after mixing.
I like the jugs cause they can stack 3 even 4 high when full. :-) Last edited by StiLimited; 07-18-2019 at 04:30 PM. |
07-18-2019, 09:53 PM | #8853 | |
Scooby Newbie
Member#: 298502
Join Date: Oct 2011
Chapter/Region:
RMIC
Vehicle:2011 WRX sedan |
Quote:
Typical sensors used for FlexFuel setups determine ethanol concentration by measuring the relative permittivity of what's flowing through the sensor. Gasoline has a lower relative permittivity then ethanol. Water has a higher relative permittivity then ethanol. Keep in mind ethanol is hydrophilic (water loving), so it will absorb water vapor in the air over time. What's most likely happening in your case; the E85 is slowly absorbing water vapor in the air, which will cause a FlexFuel sensor to read higher concentrations of ethanol then actual. The Stabil may also be throwing off the readings. You could test the later by running E85 through a FlexFuel sensor without Stabil, adding some Stabil to your tank and then seeing what the sensor shows after driving around for a bit to mix it in the fuel. See the below links for more info: https://cecas.clemson.edu/cvel/auto/...el-sensor.html Last edited by HuckFinn; 07-18-2019 at 10:13 PM. |
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07-19-2019, 02:10 AM | #8854 |
Scooby Newbie
Member#: 121212
Join Date: Jul 2006
Chapter/Region:
SWIC
Vehicle:2007 Sti Limited Urban Gray Metallic |
actually I'm not using a sensor. I'm using the Quick Fuel Test Tube
https://www.amazon.com/Quick-Fuel-Te.../dp/B007ZJ749O I definitely will test next time before and after stabil. But I doubt it's much water being absorbed. I live in a very dry area of So. Nevada, typical humidity is single digits. The fuel is kept in the HDPE containers tight, and they are in a vented shed. Not saying impossible, but if it is, I can't imagine it being much. |
07-19-2019, 08:22 AM | #8855 | |
Scooby Specialist
Member#: 220816
Join Date: Aug 2009
Location: Pittsburgh PA
Vehicle:2018 Exotruck |
Quote:
First to understand my theory you gotta understand that a GM ethanol sensor is actually just a ohm meter. It test the resistance of the fuel at certain temps, that is why it also has a temp gauge built into it. It knows the conductivity (ability for electricity to pass through it) for both fuels. Gasoline is pretty much di-electric, electricity can barely pass through it. Ethanol, allows a little more flow but still not enough to go shorting out your fuel pump and making you explode. Second, you need to remember that alcohol is VERY hydroscopic, it absorbs water. WATER lets electricity flow right on through it. As ethanol sits it absorbs the water in the air and as it absorbs water, I believe that throws off the conductivity reading of the sensor. My fuel tank is pretty vented, i have no evap or anything. I can fill up today with e75 and in a week it will be reading closer to e80 with Pittsburgh humidity |
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12-08-2019, 12:06 AM | #8856 |
Scooby Newbie
Member#: 196882
Join Date: Dec 2008
Chapter/Region:
MWSOC
Location: Holset baller on a budget.
Vehicle:08 WRX |
The quick fuel tube is a great no nonsense device that takes water absorption out of the equation. I was using one back when E85 started being readily available in MI (2008). Such a PIA to use compared to just watching a gauge though.... Using a Zietronix now and tuning for flex fuel. Unfortunately the days of year-round E85 in MI are over. Seasonal blend I'm getting E75.... Hunted around for any hold out stations that may still run E85 all year, haven't found a single one (Detroit area).
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12-08-2019, 04:33 PM | #8857 | |
NASIOC Supporter
Member#: 130990
Join Date: Nov 2006
Chapter/Region:
NWIC
Location: Menzel Lake, WA
Vehicle:06 Red Ltd.Wagon Dom 1.5xtr JJ tuned |
Quote:
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02-13-2020, 10:55 PM | #8858 |
Scooby Newbie
Member#: 455380
Join Date: Sep 2016
Chapter/Region:
International
Location: Melbourne
Vehicle:2004 WRX STI Twinscroll Ej207 VF37 |
Recently fixed a worn wastegate actuator and injector leak. Pretty happy with the results, but wish there was more top end. Any suggestion on how to get up to 350-400hp? Thinking turbo, headstuds and decat?
Also, I've noticed the car is very hard to restart once warmed up. It'll spit fuel out the exhaust while cranking, then fire up after a few tries while holding throttle open 50%. Cold starts are fine. Final Tune - Hub Dyno: Ambient: 86°F Humidity: 70% Elevation: 101ft 308hp 330ftlb 2004 WRX STI(ADM) Twinscroll on E85 Stock Version 8 Ej207 swap(30,000miles) Stock VF37 turbo Stock Twinscroll Headers/Up-pipe Raceworks 1000cc Injectors(Bosch) DW300 Fuel Pump Stock STI TMIC AVO Turbo Inlet Process West CAI Turbosmart 15lb IWG75 Turbosmart Kompact Dualport BOV MAC 3 port AVO 3" Downpipe(160cell cat - 5", open bell) Blitz Nur Spec Catback Last edited by Azerpm1; 02-13-2020 at 11:12 PM. |
02-14-2020, 12:01 AM | #8859 | |
Scooby Specialist
Member#: 178426
Join Date: Apr 2008
Location: FoCo
Vehicle:2010 S4 Gray |
Quote:
A fmic would help too. |
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02-14-2020, 01:54 AM | #8860 | |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
Quote:
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03-03-2020, 12:21 PM | #8861 |
Scooby Newbie
Member#: 443156
Join Date: Mar 2016
Chapter/Region:
SCIC
Location: Central Coast CA
Vehicle:2015 STI Pearl White |
Starting my closed deck on my 15 STI. Hoping for over 400 when done. I have the full cobb flex kit with 1050x's, Cobb FMIC, full Invidia Exhaust, TiAL EWG, and will have the Cobb 20g. We'll see in the coming months what she puts down.
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03-25-2020, 09:07 PM | #8862 |
Scooby Newbie
Member#: 487484
Join Date: Jun 2018
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E85 in the plans
I am in a different game than the posts I read here, but I am working on a Subaru project that I will be running E85, or at least whatever the pumps give me. Not a drag racer or street racer, but a sandcar. No high dollar motor, but a stock 2.5 n/a with added turbo. Still working on the conversion, so no numbers yet. The Corona virus has shut my tuner/dyno guy's business down until this stuff clears up. Major set back.
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04-18-2020, 12:47 AM | #8863 |
Scooby Newbie
Member#: 508009
Join Date: Nov 2019
Location: DFW, Texas
Vehicle:2018 WRX STI WR Blue |
451awhp/419wtq - E85 Mustang Dyno
- 1050cc injectors (92% Duty) - Blouche 1.5XTR Turbo - 500ft elevation Last edited by tbscamcity; 04-19-2020 at 12:32 AM. |
04-18-2020, 03:43 PM | #8864 |
Scooby Newbie
Member#: 338128
Join Date: Nov 2012
Chapter/Region:
NESIC
Location: NJ
Vehicle:2013 WRX SBP |
Oh my, those poor injectors, lol
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06-26-2020, 01:27 PM | #8865 |
Scooby Newbie
Member#: 501446
Join Date: May 2019
Location: Reno, NV
Vehicle:'15 WRX gone plaid |
2015 WRX. Full bolt-ons / built motor.
Shortblock by Casey at Herbert Performance Engine build and tune by Clinton at Shifted Performance Car made about 390whp with 400tq at 4600' elevation at e80 final count. Likely sending the turbo to SoCal Porting in a couple months. |
06-27-2020, 02:37 PM | #8866 |
Scooby Newbie
Member#: 516180
Join Date: Jun 2020
Location: Florida
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OMG - crazy cool!
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09-08-2020, 02:41 AM | #8867 |
Scooby Newbie
Member#: 456281
Join Date: Oct 2016
Location: Australia
Vehicle:2012 WRX Clubspec |
Finally part of the flex crew.
Dynapack Hub Dyno: Ambient: 67/70°F Humidity: 54% Elevation: 127ft Fuel: E80 - 11.5afr @ WOT E-Tuned by Stevie @ Pullz-On-Tuning 21-22psi 391.59hp 377.9tq Stock bottom end / heads Rotated Gtx3076r Raceworks 1250cc injectors (85-87%dc) dw300c pump Zeitronix flex kit fmic - 4" turbo inlet, 2.5" hot 3" cold Turbosmart Gen-v 38mm ewg mac 3 port custom 3 inch tbe HKS SSQV Equal Length Headers https://flic.kr/p/2jEwrdG https://flic.kr/p/2jEvvPg Tried putting [img] but didn't like it haha Last edited by Butterz123; 09-08-2020 at 09:06 PM. |
10-06-2020, 02:18 AM | #8868 |
Scooby Newbie
Member#: 377543
Join Date: Jan 2014
Chapter/Region:
South East
Location: Columbia
Vehicle:2014 sti Grey |
Just a random question here but do you guys running E keep it on E year around? When it gets cooler here its such a pita on the cold start. Point of reference I'm running Id2ks, stage 2 cams, an AMS manifold(no TGVs), and speed density tune.
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10-06-2020, 10:35 AM | #8869 |
Scooby Specialist
Member#: 52314
Join Date: Jan 2004
Chapter/Region:
South East
Location: Following the green weenie
Vehicle:... 02 and 04 WRXs! 2020 G70 3.3T RWD |
You need to adjust cold temp enrichment. My car back in SC runs E all year round and fires right up.
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11-08-2020, 09:49 AM | #8870 |
Scooby Specialist
Member#: 141470
Join Date: Feb 2007
Chapter/Region:
SCIC
Location: Riverside, Ca.
Vehicle:2017 STI CWP |
Question
So, I’ve been searching for a while and really haven’t seen any answers but I was wondering if there is any advantage to the Cobb fuel pressure sensor for E85 other than being able to watch fuel pressure on the AP. I’m already protuned and was planning on upping my car to flex fuel. Any answers would be greatly appreciated.
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11-08-2020, 10:20 AM | #8871 | |
Scooby Specialist
Member#: 114730
Join Date: May 2006
Chapter/Region:
SWIC
Location: Albuquerque, NM
Vehicle:2006 WRX Limited Wag 9.8@150 |
Quote:
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11-09-2020, 12:41 PM | #8872 | |
Scooby Specialist
Member#: 179846
Join Date: May 2008
Chapter/Region:
NWIC
Location: Renton, WA
Vehicle:07 STi Limited EFR 8474 TS EWG |
Quote:
you might as well save money for standalone like link, because cobb app with cobb flex fuel kit is almost a price of standalone. And yes fuel pressure comp is very important, id say that should be your first upgrade! |
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11-09-2020, 02:50 PM | #8873 |
Scooby Specialist
Member#: 141470
Join Date: Feb 2007
Chapter/Region:
SCIC
Location: Riverside, Ca.
Vehicle:2017 STI CWP |
Thanks for the replies guys. I already have regulator, pump, injectors, and basically went with the stage 3 setup but went protune with that. After seeing my numbers and what the car can do, I decided to go flex now.
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11-09-2020, 04:50 PM | #8874 |
Scooby Newbie
Member#: 216747
Join Date: Jul 2009
Chapter/Region:
South East
Vehicle:2009 STi Dark Grey Metallic |
While going through the hassle of converting to flex, see if you cant swing a 20g as well....
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12-19-2020, 11:10 PM | #8875 |
Scooby Newbie
Member#: 521085
Join Date: Dec 2020
Location: Florida
Vehicle:2015 STI |
Flex fuel crew checking in. **** I love corn now.
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