E85 Powered VR4? - Page 6 - 3000GT/Stealth International Message Center

DrvNsily · 11-07-2007, 10:09 PM

Yes, on a stock for stock car, e-85 is not worth the $$ unless you want to lessen your usage on fossel fuel.

As for flex-fuel vehicles, they did used to run a fuel sensor, but now mostly use the o2 and knock sensor to tune. The miles per cost was about the same also, but they did make slight power increse with the E-85, like a tenth less in 0-60.

Ethanol is not a nearly as bad for the fuel system as methanol.

E-85 does make less BTU's then Gas, but since you use more of E-85 it does make more power.

Yes E-85 is an awesome 100 pump or ever 110 leaded replacement. I was paying over $5 per gal for 100 pump, but now $2.65 for E-85.

If you use a wideband, you tune the engine just as if you were tuning with gas. You use the same numbers. Say 14.7:1 for idle and 11:1 for WOT. It shows those numbers because the wideband display is programmed to show the gas ratio's. I hope that makes sense.

If you build a motor for E-85 a gas motor can't touch it, for power and fuel economy. That is why the flex-fuel cars don't really show any difference, not if they took a premium fuel car and made it flex fuel, it would be way better on E-85. E-85 likes timing and compression. I don't has a 3000gt, but my 4 cyl has 10.5:1 comp and will run 20 psi easily.

I'll have to find the article where they converted a VW diesel jetta to run E-85 and it got awesome power and mileage.

No matter what, street driven or raced, you will need more fuel and have to upgrade the fuel system. But on a stock car, I would say don't do it, it is not available everywhere, and harder to find than diesel at times. Then when you want to put gas back in you'll have to change it back.

Also it is Federally illegal to convert a car to run E-85, but so is removing you cat

cerevo · 11-07-2007, 11:15 PM

^^ arent bigger injectors and fuel pump all that is required to run E-85?? well and a tune i guess

so to change back to 93 you would just change the tune back right?

runner4053 · 11-07-2007, 11:36 PM

Quote:

Originally Posted by DrvNsily

If you build a motor for E-85 a gas motor can't touch it, for power and fuel economy.

I have one flexfuel car to my name and my family has another one. They both get worse mileage on e85.

Lot's of good info. Thanks. I think I'm going to do this seeing as I already have the fuel system for it. --not daily driven though, for others who read this.

lethal_vr4 · 11-08-2007, 04:08 AM

[quote=cerevo;4601721

so to change back to 93 you would just change the tune back right?[/QUOTE]

Correct.

DrvNsily · 11-08-2007, 03:55 PM

Quote:

Originally Posted by runner4053

I have one flexfuel car to my name and my family has another one. They both get worse mileage on e85.

Yeah, what I meant to say was if the motor was built to use E-85 in the correct way, high comp and more timing. Flex-fuel cars are designed to run E-85, but the motors are not built to make it efficient. If they did you could not run 87 octane in them.

homer lawtey · 11-08-2007, 04:41 PM

I've heard other platforms in Europe just fit an adjustable FPR and then tweak that to compensate for the ratio when running different mixes of bio-ethanol. Typically they seem to raise from 43.5 PSI to 61 PSI when switching from normal gas to E-85. This doesn't cause issues with timing or requiring bigger injectors and controller, but it does need a bigger fuel pump on 3S, such a Denso Supra pump or Walbro 344.

leet · 11-08-2007, 10:37 PM

Quote:

Originally Posted by cerevo

^^ arent bigger injectors and fuel pump all that is required to run E-85?? well and a tune i guess

so to change back to 93 you would just change the tune back right?

yes and yes

a2j · 11-13-2007, 07:49 PM

my gas millage didn't get worst after using 50/50 or 40/60 mixes of 93 and e85. its stayed around 20mpg. no extra lights came on, so everything looks good for now.

lethal_vr4 · 11-14-2007, 02:33 PM

Quote:

Originally Posted by a2j

right now I'm running 50/50 mix so far so good. on stock fuel system. just normal driving. if something will go wrong I'll let you guys know.

Quote:

Originally Posted by a2j

my gas millage didn't get worst after using 50/50 or 40/60 mixes of 93 and e85. its stayed around 20mpg. no extra lights came on, so everything looks good for now.

No offensive, but if I were you I would go back and look at your setup. Running E85 on a stock fuel system *especially with no logging capablity is a BAD, BAD thing.

vr4_rider · 11-14-2007, 08:53 PM

Hey, I have 560CC Evo Injectors (which really flow a little bit more than 560CC) and a 255Walbro and a PRO-M MAFTUNER (with no timing control).

SHOULD I SWITCH

When you guys say upgrade your fuel system...what do you intend to include? Just pump and injectors? OR lines, too?

Also, the people running e85, have you changed your fuel filter yet? If so, how often? What are the maintenance (fuel component related) to run this?

I have a station in my town, so if you guys (no noobies) say it's good to go, I am going to try it.

T

11-07-2007, 10:09 PM	#51 (permalink)
DrvNsily New User - Please be kind Join Date: Nov 2007 Trader Rating: (0)	Re: E85 Powered VR4? Yes, on a stock for stock car, e-85 is not worth the $$ unless you want to lessen your usage on fossel fuel. As for flex-fuel vehicles, they did used to run a fuel sensor, but now mostly use the o2 and knock sensor to tune. The miles per cost was about the same also, but they did make slight power increse with the E-85, like a tenth less in 0-60. Ethanol is not a nearly as bad for the fuel system as methanol. E-85 does make less BTU's then Gas, but since you use more of E-85 it does make more power. Yes E-85 is an awesome 100 pump or ever 110 leaded replacement. I was paying over $5 per gal for 100 pump, but now $2.65 for E-85. If you use a wideband, you tune the engine just as if you were tuning with gas. You use the same numbers. Say 14.7:1 for idle and 11:1 for WOT. It shows those numbers because the wideband display is programmed to show the gas ratio's. I hope that makes sense. If you build a motor for E-85 a gas motor can't touch it, for power and fuel economy. That is why the flex-fuel cars don't really show any difference, not if they took a premium fuel car and made it flex fuel, it would be way better on E-85. E-85 likes timing and compression. I don't has a 3000gt, but my 4 cyl has 10.5:1 comp and will run 20 psi easily. I'll have to find the article where they converted a VW diesel jetta to run E-85 and it got awesome power and mileage. No matter what, street driven or raced, you will need more fuel and have to upgrade the fuel system. But on a stock car, I would say don't do it, it is not available everywhere, and harder to find than diesel at times. Then when you want to put gas back in you'll have to change it back. Also it is Federally illegal to convert a car to run E-85, but so is removing you cat

11-07-2007, 11:15 PM	#52 (permalink)
cerevo i love car Join Date: Jul 2006 Location: the ky Drives: Dodge Neon Trader Rating: (11)	Re: E85 Powered VR4? ^^ arent bigger injectors and fuel pump all that is required to run E-85?? well and a tune i guess so to change back to 93 you would just change the tune back right? __________________ Three Diamonds

11-08-2007, 04:08 AM	#54 (permalink)
lethal_vr4 NG '03 6th Floor Crew Join Date: Oct 2001 Drives: 92 VR4/ 01 Lightning Trader Rating: (56)	Re: E85 Powered VR4? [quote=cerevo;4601721 so to change back to 93 you would just change the tune back right?[/QUOTE] Correct. __________________ Web log: http://apps.blackflagracing.com/Blog/ The Armada '93 Sandstone Gray 3000GT VR-4 2006 3SI Ride of the Year 2007 All Mitsu Cookout, 1st Place 1st Gen 3/S '92 Fiji Blue 3000GT VR-4 2004 All Mitsu Cookout, 1st Place 1st Gen 3/S 2005 NG Quick 8 AWD Unlimited 1/4 Mile Qualifier. BLACK FLAG RACING '92 Emerald Green Pearl Stealth RT/TT 3.5L, 15Gs, AEM EMS

11-08-2007, 04:41 PM	#56 (permalink)
homer lawtey GTOUK Member Join Date: Aug 2003 Location: United Kingdom Drives: A real GTO TT Trader Rating: (2)	Re: E85 Powered VR4? I've heard other platforms in Europe just fit an adjustable FPR and then tweak that to compensate for the ratio when running different mixes of bio-ethanol. Typically they seem to raise from 43.5 PSI to 61 PSI when switching from normal gas to E-85. This doesn't cause issues with timing or requiring bigger injectors and controller, but it does need a bigger fuel pump on 3S, such a Denso Supra pump or Walbro 344. __________________

11-14-2007, 08:53 PM	#60 (permalink)
vr4_rider USMC Join Date: Feb 2002 Location: Iowa Drives: '93 Vr4; '06 675cc Trader Rating: (10)	Re: E85 Powered VR4? Hey, I have 560CC Evo Injectors (which really flow a little bit more than 560CC) and a 255Walbro and a PRO-M MAFTUNER (with no timing control). SHOULD I SWITCH When you guys say upgrade your fuel system...what do you intend to include? Just pump and injectors? OR lines, too? Also, the people running e85, have you changed your fuel filter yet? If so, how often? What are the maintenance (fuel component related) to run this? I have a station in my town, so if you guys (no noobies) say it's good to go, I am going to try it. T __________________ Trung [1993 Pearl Black VR-4] Appearance//1999 Front end//ground controls w/ adj. rear control arms//18x9 5Zigen 5ZR wrapped in 245 front, 275/35/ZR18 Falkens//DR Racing Black lugnuts Mods//GReddy EBC Spec-II//Greedy Type-S BOV//Unorthodox UD pulley//ATR Downpipe//HKS Dual exhaust//255 Walbro pump//GReddy Profec Spec II EBC//JET tuned ECU//AutoMeter Boost gauge//HKS Turbo Timer//Gutted Hi-Flow DynoMaxx CC//Vac Reduction//EGR Block off//PRO-M 80mm MAS and MAF-T Tuner//EVO 8 560cc injectors //Shriver's datalogger Turbos: 13T @ 6 PSI Current Problem(s): Cherries in the rear view mirror In the Process: Nothing Want to Trade/Buy: Cams and springs, non-OEM clutch and flywheel...

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