Nissan 370Z Forum - Gains from E85 (ethanol) on an N/A bolt on 370Z

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- - Gains from E85 (ethanol) on an N/A bolt on 370Z (http://www.the370z.com/tuning/106853-gains-e85-ethanol-n-bolt-370z.html)

Quote:

Originally Posted by Chuck33079 (Post 3314871)

Right. So if someone is claiming the same, if not 1-2 miles per gallon improvement, they are in error since it would not be possible to get the same mileage on a fuel that has less energy by volume. Maybe he's looking at the mpg gauge which is now wrong due to different injectors? :confused:

I'm also unclear how someone can claim a power improvement from going to E85 without any timing adjustments. Can someone explain how that works? I'm at a loss.

They are mistaken if they believe that under similar conditions they are seeing similar fuel economy (much less an increase) with E85 over E10 or regular petrol.

E85 allows you to change the timing to a range not possible to run on standard gasoline due to knock. Without a tune to take advantage of it, you should not see any difference in power. It's like putting 94 octane in a Prius.

Quote:

Originally Posted by Push370zzz (Post 3314500)

Sorry, but there is absolutely no way that your car gets better gas mileage with E85 over E15 or less pump gas.

It does in some cases (other platforms I've done). However my original statement about it being more economical turned out to be false -- the eco calculation on the dash is junk, not accurate on E85, and sadly not even accurate on pump gas.

Quote:

Originally Posted by synolimit (Post 3314535)

This for me? My tuner didnt say he couldnt set the timing higher, he said it wouldnt take it. The ecu and or uprev wont let him do ****. And if my post on why e85 lost power over 93 makes sense to anyone else besides me than thats why. 28* just isnt enough nor good enough to preignite the mix soon enough. Im testing the dyno and tuner again real soon going back to 93 and going back to 2.5" CAI. Ill find my power loss if it kills me.

That's because UpRev is crap.

28* still makes more power with E85 over pump gas. I added zero extra ignition advance and still saw 5-6hp gained.

seems all e85 for n/a will make is 6-10whp. i ordered myself injectors and plan on getting the car tuned mid october. i might grab the plenum mod while i'm at it, so it will be hard to tell what i truly make from e85.

If it make 5-10more whp all across the board id be happy with that.

Quote:

Originally Posted by njobe89 (Post 3315831)

It'll be E70 by then. Id cut some power off those numbers.

Quote:

Originally Posted by synolimit (Post 3316036)

It'll be E70 by then. Id cut some power off those numbers.

we'll see what happens.. as of right now my plan is to get tuned by the 2nd week of oct.

Quote:

Originally Posted by njobe89 (Post 3316342)

we'll see what happens.. as of right now my plan is to get tuned by the 2nd week of oct.

Might get lucky, e85 tank might still have the good stuff

Quote:

Originally Posted by synolimit (Post 3316354)

Might get lucky, e85 tank might still have the good stuff

not sure if a plenum mod would be able to squeeze me out more power.

Quote:

Originally Posted by njobe89 (Post 3316392)

not sure if a plenum mod would be able to squeeze me out more power.

100%! I have one for you, but not much honestly.

how much were you able to get out of it? 2-4whp?

Quote:

Originally Posted by njobe89 (Post 3317104)

how much were you able to get out of it? 2-4whp?

Roughly. All 3 are a solid 10 in the power band.

So I can just go to a gas station with e85 today and fill up my bone stock 370z engine and it wont hurt my car?

^^^ This I'll need gas today also. :/

I have been mixing E85 and 93 lately.

Quote:

Originally Posted by Blighter (Post 3317220)

So I can just go to a gas station with e85 today and fill up my bone stock 370z engine and it wont hurt my car?

Only if you have GtR injectors. And untill tuned i wouldn't go WOT as you'll be pretty rich. But ok enough to drive on, you're not gonna flood it.