NA Guys on E85 - Step In
10-13-2010, 10:28 PM
#1
Le Mans Master
Thread Starter
NA Guys on E85 - Step In
Would like to know how many NA guys are on E85 and if they like it. Found some good threads but they are all related to boosted guys. My MAIN reason for wanting to switch is to lower the smell of my exhaust (I have no cats and its horrible), 2nd reason is for the slight power increase, I have more reasons too. Also if some of you guys can post a copy of your (HPTuners) tune up I would appreciate it! I already have 54lb injectors and my mods are in my sig below. 
**Please do NOT post in my thread telling me that E85 is all BS and how it will hurt my fuel system, I dont care to hear it. This thread is for the NA guys who are running or have run E85.
**Please do NOT post in my thread telling me that E85 is all BS and how it will hurt my fuel system, I dont care to hear it. This thread is for the NA guys who are running or have run E85.
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RobGOV-DCZ (03-23-2017)
10-15-2010, 12:41 AM
#2
Le Mans Master
Thread Starter
Just did the switch to E85 today, drained the tank at the fuel rail with the fuel pump on till it sputtered, then put 5 gals in, changed the Stoich to 9.799 and added 2 deg of timing across the board. Fired right up, runs smoother (no more low rpm bucking at 1400-1600 rpm), smells great, runs 10* cooler and def has more power up top and on the low end, I am right at stoich in CL and about 8.9-9.1 in open loop. Its a little rich at 7.1-7.5 AFR @ WOT but I suspect that its due to 1-1.5 gals of 100% gas left in the tank that mixed with the 5 gals of E85, so I am going to drive it till its almost empty tonight and fill it back up with E85, it should lean out a tad to where it needs to be. I have 54lb inj's and they are at 95% duty cycle.
BTW I am not using Lambda cause my LM2 has a function in the settings (on the computer with the LM2 connected) to change the reading for stoich E85 (9.799) so it reads in AFR just fine. I still cant get my AFR error to read right tho in HP Tuners.
BTW I am not using Lambda cause my LM2 has a function in the settings (on the computer with the LM2 connected) to change the reading for stoich E85 (9.799) so it reads in AFR just fine. I still cant get my AFR error to read right tho in HP Tuners.
10-19-2010, 06:52 AM
#4
Le Mans Master
Thread Starter
I do not want to do it but I have to go back to normal gas, my inj duty is at 114% @ wot and I do not have a return style fuel system and do not want to go through the hassle of running a return line, etc. I cannot get my AFR richer than 8.0 @ WOT due to this. I am going to miss the stuff. 
10-19-2010, 07:33 PM
#5
Supporting Vendor
I do not want to do it but I have to go back to normal gas, my inj duty is at 114% @ wot and I do not have a return style fuel system and do not want to go through the hassle of running a return line, etc. I cannot get my AFR richer than 8.0 @ WOT due to this. I am going to miss the stuff.
E85 would be a inexpensive power gain but maybe not.
So do you need bigger injectors? Fuel pump? What else?
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10-19-2010, 11:11 PM
#6
Le Mans Master
Thread Starter
I will need a bigger fuel pump and a return style fuel system, with your current mods you will need just bigger injectors and a tune. I am at 450 RWHP and E85 maxes out the pump at 5800 rpm
10-20-2010, 10:57 AM
#7
Burning Brakes
10-22-2010, 06:23 PM
#8
Melting Slicks
I'm N/A and For every 7 to 8 gals of 93 octane,I put in 2 to 3 gals. of E-85.My car runs great with it 
I didn't change the tune that much,At WOT I'm at 11.5 a/f ratio.I haven't tried a full tank though.I would like to know how you make out with it.................Paul
I didn't change the tune that much,At WOT I'm at 11.5 a/f ratio.I haven't tried a full tank though.I would like to know how you make out with it.................Paul
10-25-2010, 05:20 PM
#9
Cruising
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You should be good with 450rw and 54# injectors. Have you changed the fuel filter? E85 loves to pick up debris from the tank and lines and plug up your filter. I just bought a wix one from rock auto for 35 bucks. Also what pump are you running? If you are interested in seeing what can be done with E85 NA check out my thread on ls1tech http://www.ls1tech.com/forums/dynamo...acing-cam.html I tuned the car myself. I made 2 pulls, one with 23.5* timing and the second with 28 or 29*. Both pulls were within 1 hp, so I am running 23*. I suspect that I am making the power with such little timing due to my big stroke. Overall I am very happy with the switch. The car idles nice and seems to drive smoother. I don't have a dyno comparison going from 91 to E85, but you can see the torque on my graph. Over 400rwtq from about 2100 to 6000 rpm. I think the faster burn rate of the E85 has something to do with this.
10-26-2010, 10:22 PM
#10
Drifting
Mine is the same way in regards to timing and almost no difference in power. However, more timing on the street feels much more crisp which is the way I like it. I just look at my logs on the street and make sure there is no knock. E85 makes more torque then regular pump 93.
10-27-2010, 01:52 PM
#11
Le Mans Master
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St. Jude Donor '13-'14-'15
We just got E85 at some staions here in my area-- I am very intersted in trying it on my C5 and my carbed 67 chevelle----I also have a Ford Tarus flex fuel car and have run about 5 tankfulls now---
So far --absolutely can't tell thats its in there--car runs NO differntly
BUT---It has more power---runs cooler--was getting about 24/28 MPG on gas and that went down some to 20/24-- the E85 is only 2.25 a gallon so its about a wash---But love the fact that I'm doing a small part to get rid of our import oil habit and cleaning up our air---
So far --absolutely can't tell thats its in there--car runs NO differntly
BUT---It has more power---runs cooler--was getting about 24/28 MPG on gas and that went down some to 20/24-- the E85 is only 2.25 a gallon so its about a wash---But love the fact that I'm doing a small part to get rid of our import oil habit and cleaning up our air---
10-28-2010, 03:17 AM
#12
Le Mans Master
Thread Starter
I got a racetronix hot wire kit to allow the fuel pump to run directly off the alt, should help out a tad from what I have been reading, it will be here later today so I will know for sure, my fuel pressure drops from 60 psi to 53 psi at 5800 rpms to 6500 rpms and my inj duty goes to 104 on a warm day and 114 on a cold day (cold air = needs a tad more fuel) so hopefully the harness and a fuel filter change will help me get that down. A boost-a-pump IMHO is a bandaid fix.
Got a WIX one too to go in later today, I have ran about 2.5 tanks of E85 through so hopefully I wont have to change it again for a while. I had someone do the math on HP Tuners.com and I will need a pump to put out at least 233LPH, the racetronix kit has the 255lph pump but as stated above I bought the hot wire kit to try that first along with a filter change, if it does not get my injectors below 90% @ a AFR of 7.5-7.8 then I will get the pump, I will be fine after that. But yes the 54lb injectors should be fine.
Got a WIX one too to go in later today, I have ran about 2.5 tanks of E85 through so hopefully I wont have to change it again for a while. I had someone do the math on HP Tuners.com and I will need a pump to put out at least 233LPH, the racetronix kit has the 255lph pump but as stated above I bought the hot wire kit to try that first along with a filter change, if it does not get my injectors below 90% @ a AFR of 7.5-7.8 then I will get the pump, I will be fine after that. But yes the 54lb injectors should be fine.
06-09-2011, 09:43 AM
#15
Burning Brakes
If you can log with a WB you can check the AFR and IDC but be aware being on alcohol the rich ratio is higher the gasoline.
Example the difference between 14.68 gas stoich and power ratio 12.9 is ~ 1.137. The difference between 9.8 E85 stoich and 8.3 power ratio is ~1.18 so you need to provide more fuel volume at top end on E85 the gas. 8.3 is a little safer then 8.5 power ratio lean. The WB, KR and IDC should tell you if you have enough fuel volume to stay safe.
Carlos
