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

ANMVQ

OK so talk to me about the injectors and pump. I have ECUTEK so I can added a map for E85 but I was under the impression that I need to change the pump and injectors?

BTW would this be safe to drive on until I get my tune updated. I only have access to Etunes and my tuner is in another state.

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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

VitViper

Yes some motors will gain more or less. We have the Ford Coyote (5.0L) engines picking up 17-18whp & 20-25wtq from E85.

The injectors are effectively maxed out -- holds a clean AFR but if you want more breathing room you can upgrade them, but you don't have to. It was the same story on the shop Coyote when we ran E85.



Lol on an F/I car you're into boost so easily that it will just suck down the fuel like a crack addict.

With the VVEL/VTC system on this motor, do yourself a favor and find a competent tuner with a reliable dyno. I've seen minor 2-3* changes to VVEL net 4-5tq through parts of the curve, or the opposite -- cause huge 40tq dips in the curve. The goal is to fatten the area under the curve, and you're going to have a hard time trying to get 4tq here and there (and the cumulative effect is nice).

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ANMVQ

With the VVEL/VTC system on this motor, do yourself a favor and find a competent tuner with a reliable dyno. I've seen minor 2-3* changes to VVEL net 4-5tq through parts of the curve, or the opposite -- cause huge 40tq dips in the curve. The goal is to fatten the area under the curve, and you're going to have a hard time trying to get 4tq here and there (and the cumulative effect is nice).[/QUOTE]

Yea finding a local tuner is a 0 to NO shoot for me Mass has NO ONE.

My dyno and TW curve is flat

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Ecutek 302WHP.240Wtrq.jpg (89.2 KB, 107 views)

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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

VitViper

That's good, however that graph has no context for me -- looks like some sort of base and then a "tuned" pull -- looks very similar to the last G37 I did on UpRev.

My point was I can post overlays of 5 pulls for you and show you how little changes in the VVEL made minute gains between pulls but the cumulative effect was greater than the starting point -- you don't have that kind of precision and repeatable doing a street tune.

In an case, I'm not going to argue the merits of street tune (etune) vs dyno tune. They both have their niche.

ANMVQ

no agreed about the Street vs dyno thoughts, I should have been more clear about the graph. The lower WHP line was my finished UPREV tune and the other "Higher" line was my finished ECUTEK tune. I pick up 15 WHP just swtich from UPREV.

We made 10 pulls total, 5 on each software

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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

VitViper

That makes sense. The lower graph really looked like the motor wanted more timing. That's been one of the most frustrating things of dealing with UpRev -- you can tell the motor wants one thing, and no matter how hard you faceroll on your laptop, the ECU would fight you the whole way.

lol

1cleanZ

E85 gaining MPG's over unleaded? If you convert a car from a standard fuel system from running Unleaded to Corn, your MPG's will go DOWN due to more fuel being consumed.

This isn't a result of being boosted. If you take a TT 370z and take the MPG readings, and THEN convert to E85 (just as Blake did), your MPG's will indeed decrease.

Will E85 make more power? YES, why???? Ignition point = It means you can run a few degrees more timing (all in the tune)
E85 ignights at 365 degrees
93 Octane Ignites at 280 degrees

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2009 PW Nismo #0021 -My Built Progress >>1cleanG to 1cleanZ<<
Team NextLevel

VitViper

Theory and practice are not always the same thing. When I go through a tank of fuel and do a manual calculation at the pump, we'll know for sure.

I clearly demonstrated E85 making power with absolutely zero timing map changes. I've seen this on every N/A car I've converted to E85.

In fact simply stating the fuel allows you to possibly run more timing to make more power is nothing more than an assumption. In many cases I've had N/A motors that want zero timing map changes on the fuel over the pump gas map.