[JTracy223]

Hey guys,

Well the title says it all, I'm running JB4 5/23 firmware,DCI, & VRSF DP's, if I top off my tank with about 5 or so gallons of E85 mixed w/Shell VPower 93, and run map 5, what should I expect in terms of butt dyno... Thanks in advance for replies.

[Stucks]

E85 mixed with 93 pump gas = poor mans race gas.....

...so I'm gonna say "butterflies in your stomach" feeling. The new firmware enables you to hit 17 psi down low on map 5 with a 50/50 mix. a 20-30% mix should still help your timing out though.

[JTracy223]

That's what i like to hear! Thanks!

[TT3 iN NyC]

might be a silly question but how do you determine the mixture?

[Szemenyei]

Originally Posted by TT3 iN NyC

might be a silly question but how do you determine the mixture?

I was wondering this as well. I have an idea, but would like to know how others do it.

[Markyd83]

Take e85 amount put in tank and divide by 16.1

[JTracy223]

well its definitely not technical or anything like that but per most users on here they say you can safely run about 30% E85 no problem so i just fill my car with 93 to about 3 quarters of a tank and then top it off with E85... I'm going to drive relatively calm for about 20-30 mintues and then see how it performs... Should i be doing it some other way..

[Wedge1967]

On average, I put 7 to 8 gal of e85 and then top off with 7 gal of 92 v-power. I'm hitting 18 psi and seeing 500 ft-lbs at 4k. Timing is crazy. I'm breaking traction at 4k in 3rd and 4th gear. I know I hear guys talking about map 5 with the JB4 and if it's anything like the aggressive e85 maps for the Procede, you're going to fall in love with your car all over again! So don't be afraid to put a little extra e85 in the tank because I would recommend getting closer to 50/50 if you're going to hit 17 to 18 psi without meth. Give her a few blocks and then spank her really hard...

Make sure you keep track of your Fuel Trims and AFR. I actually had a failing HPFP and was maxing my trims and getting a fuel rail pressure code going into 4 gear wot. Dealer replaced the pump with the new version of the pump and she's a happy car now.

[e92oholic]

Originally Posted by Wedge1967

On average, I put 7 to 8 gal of e85 and then top off with 7 gal of 92 v-power. I'm hitting 18 psi and seeing 500 ft-lbs at 4k. Timing is crazy. I'm breaking traction at 4k in 3rd and 4th gear. I know I hear guys talking about map 5 with the JB4 and if it's anything like the aggressive e85 maps for the Procede, you're going to fall in love with your car all over again! So don't be afraid to put a little extra e85 in the tank because I would recommend getting closer to 50/50 if you're going to hit 17 to 18 psi without meth. Give her a few blocks and then spank her really hard...

Make sure you keep track of your Fuel Trims and AFR. I actually had a failing HPFP and was maxing my trims and getting a fuel rail pressure code going into 4 gear wot. Dealer replaced the pump with the new version of the pump and she's a happy car now.

+10000000000000

I love having a 50/50 mix of e85 in my car. The extra hp is awesome. But prepare for horrible mileage. I get about 250 miles a tank when driving like an idiot with e85. But then again I got about 300 with just regular 93, i drove nice the first 1/2 tank and got 202 miles on it but I just couldnt keep that up! Now i just need to get my fuel pump replaced car is running like crap.

[JTracy223]

I was afraid to drop E85 first than throw in the 93... I'm guessing that it's not going to make a difference if i add the E85 ontop of the 93 that already in the tank right???? and i sorta drove like an idiot on the way into work this morning and i plan on stopping by the E85 gas place tonight after work so i'll beat hear hard and just top off maybe i'll be more around 6-7 gallons... I CAN NOT WAIT FOR TONIGHT LOL

[Wedge1967]

The fun factor out weighs the drop in milage... Although, I'm sure my Bridgestones are paying the prices to. I took my Service Advisor for a ride the other day because he was telling how fast another customers 135 was after upgrading it to Dinan Stage 2. You should have seen the look on his face when I lit up the tires in 2nd gear. His head bounced off the head rest when I hit 3rd. He had that OMG look on his face before turning to me and saying this car is a real sleeper with a look like a kid who had never been in a candy store before...

Originally Posted by e60oholic

+10000000000000

I love having a 50/50 mix of e85 in my car. The extra hp is awesome. But prepare for horrible mileage. I get about 250 miles a tank when driving like an idiot with e85. But then again I got about 300 with just regular 93, i drove nice the first 1/2 tank and got 202 miles on it but I just couldnt keep that up! Now i just need to get my fuel pump replaced car is running like crap.

[boostaholic786]

If I was you I would wait till you get down to a quarter of a tank and then put about 4 gallons of E85 in mixed with 93. Take into account that regular 93 has 10% ethanol in it which is labeled as E10. and waiting till a quarter tank or right under is the best way because when you fill it with the 93 it blends the E85 and the 93 so you dont get fuel codes. This is how I have always done it and I have done it for 14 months so far

[dicostal]

Hi Guys, I am a bit confuse about these post about E85

I was under the impression that ethanol contains less energy than gasoline and thus it would generate less power and MPG.

I apologize for not understanding how this works.
Also if i were to put an E85 mixture like mentioned above 50/50 don't I need a tune that knows to increase my boost? the car wont adjust automatically.

sorry for the silly questions, but I am new to the E85 thing.

thank you

[boostaholic786]

Oh and if your car is still an E85 virgin then make sure you drive it a good 20-30 miles especially if your going to put it 7 gallons instantly. If I was you I would put in 3 then 4 then 5 and so on.... and then start gradually letting map 5 adjust to the octane. Its the "proper" way to do it IMHO. if you want to just be safe, you can reset map 5 when you are about to put the E85 in by switching to map 1 or any other map for a minute and then back to map 5 lol your def going to freak out and if you do put 7 gallons in your first time putting it in, dont be surprised if you get fuel codes especially mixing it the way you wanted to by filling the car up and then putting E85 in. Its WAY better to do it the other way and wait till the car is about at 1/4 tank or slightly under, then fill it with some E85, then top it off with 93 (make sure you dont put kroger 93 in it either. I'm a fuel distributor and kroger "regular" gas is literally piss poor) find a Exxon or Shell or Chevron, hell even QT. They are a top tier gas as well. It surprised me to be honest.

[Bimmer305]

Originally Posted by boostaholic786

Oh and if your car is still an E85 virgin then make sure you drive it a good 20-30 miles especially if your going to put it 7 gallons instantly. If I was you I would put in 3 then 4 then 5 and so on.... and then start gradually letting map 5 adjust to the octane. Its the "proper" way to do it IMHO. if you want to just be safe, you can reset map 5 when you are about to put the E85 in by switching to map 1 or any other map for a minute and then back to map 5 lol your def going to freak out and if you do put 7 gallons in your first time putting it in, dont be surprised if you get fuel codes especially mixing it the way you wanted to by filling the car up and then putting E85 in. Its WAY better to do it the other way and wait till the car is about at 1/4 tank or slightly under, then fill it with some E85, then top it off with 93 (make sure you dont put kroger 93 in it either. I'm a fuel distributor and kroger "regular" gas is literally piss poor) find a Exxon or Shell or Chevron, hell even QT. They are a top tier gas as well. It surprised me to be honest.

I made that mistake. First time using E85 I put in 5 Gal E85 and 8 Gal 93. I didn't even let it adapt, I just went crazy with it and I got some fuel pump codes.
I correct it by starting mixing 2 Gal of E85 and 6 Gal 93. Last time I mixed 4 Gal E85 and 9 93. And I haven't get any code. I'll be working my way up to 50/50 mix.

Off topic, that gas station that I use to put E85 is a U-Gas. How good of a quality is the U-gas fr regular 93 gas?

[benzy89]

You should expect to go very fucking fast


I'd recommend that if you can't get to that Shell at Vine Street, Philadelphia (the 1 you asked about in the other thread), try to get a 5 gallon gas can from AutoZone/NAPA and fill that up with the 3-4 gals of E85. Then drive over your gas station of choice, add E85 & then fill up with 93 from where ever. This is my method, I feel like it gives a better mix layering the 93 on top of the E85.

Also just recommend that you throw in an occasional Fuel Injector cleaner (Techron) to make sure the ethanol doesn't clog up your fuel injectors

[themyst]

Testing E85/93 with my rb turbos on a conservative map today. Let's see how she does!

VD says my cars around 410-415 whp on RBs on 93 octane only. Figure with the huge timing increase I can get that number looking like 450 on 17 psi in the powerband.

[JTracy223]

So I tried it!LOVE IT
Sad I didn't do this MONTHS ago!thanks everyone for the knowledgable replies.

[boostaholic786]

Originally Posted by dicostal

Hi Guys, I am a bit confuse about these post about E85

I was under the impression that ethanol contains less energy than gasoline and thus it would generate less power and MPG.

I apologize for not understanding how this works.
Also if i were to put an E85 mixture like mentioned above 50/50 don't I need a tune that knows to increase my boost? the car wont adjust automatically.

sorry for the silly questions, but I am new to the E85 thing.

thank you

Its all good man but you would need a tune if you dont already have one and download the latest firmware for the JB4 and run map 5. It gives you less miles per gallon but it also has an octane rating of 105 so its like putting race gas in your car for <$3.00 a gallon compared to $10.00 and $9.89 for race gas, if your lucky!! Get a JB4 load the newest firmware version and put it on map 5 and enjoy easy as that

[Djg21]

Anything over 5 gal in a tank results in SES or CEL lights for me.

Just JB4 and DCI here.

[benzy89]

Originally Posted by Djg21

Anything over 5 gal in a tank results in SES or CEL lights for me.

Just JB4 and DCI here.

5 gals to a full tank of 93/91 octane?? And do you have the most recent JB4 update?

[themyst]

Originally Posted by benzy89

5 gals to a full tank of 93/91 octane?? And do you have the most recent JB4 update?

I'm running a low boost PTF map specific for 5 gallons E85. Unfortunately I haven't got on it yet cause of the rain