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ok it seems make the power. But what is the Long run life for your Engine? Nissan Doesn't recommend on using Ethanol Based fuel and same with Honda.
 

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I've read similar comments from Skyline Turbo owners who achieved around 20rkW on ethanol based fuels.

Question - for our non turbo Z's, can our ECU's (or piggybacks) be tuned similarly to the turbo Nissan's and maintain that level of tune, without the factory ECU altering timing etc????
 

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I would imagine if Nissan doesn't recommend fuel with Ethanol it's because of the same reasons that the article states. But, if it's tuned for it, I'm not sure what additional wear there may be. :dunno: Good question.
 

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I've read similar comments from Skyline Turbo owners who achieved around 20rkW on ethanol based fuels.

Question - for our non turbo Z's, can our ECU's (or piggybacks) be tuned similarly to the turbo Nissan's and maintain that level of tune, without the factory ECU altering timing etc????

What he said :stupid:

Is a stock Z's ECU going to be able to do anything with the higher octane fuel and will the ECU reset on a unichip or similar to defaults?
 

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Ethano is a great fuel ... if your engine is made to run on that. If you convert the engine to run on Ethanol, and then tune it to utilize the benefits then I'm sure it'll be awesome.

Though, our cars are made to run on petrol and not ethanol and therefore putting ethanol in the engine will have adverse effects on the engine.
 

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I heard someone the ethanol does not react to wel with some of the engine components. ie damages them. Im sure in terms of power its great. But i think the engine has to be built from ground up to run ethanol, in order to prevent this from happening.
 

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Ethanol is a solvent, so if your fuel lines etc aren't engineered with the knowledge that you're pouring a solvent into it....who knows what could get eaten through?

CRD pulled 30rwkW out of their "light to medium" tune GT-R adjusting it from 98RON fuel to Optimax Extreme.


The factory ECU should learn around it and be able to extract some more power out of it, and my Unichip tune is already a little rich for regular fuel, so my setup should be OK with it.

However, I'm not putting this stuff into my car unless I'm planning on emptying the tank quickly. Being a solvent, I'm not going to let it sit in the car for a week or two.
 

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Discussion Starter · #11 ·
I've read similar comments from Skyline Turbo owners who achieved around 20rkW on ethanol based fuels.

Question - for our non turbo Z's, can our ECU's (or piggybacks) be tuned similarly to the turbo Nissan's and maintain that level of tune, without the factory ECU altering timing etc????
Thats a good question.

Can the stock ECU adjust our air/fuel ratio to prevent a lean condition from happening due to the highly oxygenated ethonal based fuel without switching to a less performance oriented ignition timing map?

The oxygenation is occuring from within the fuel not before the MAF, so the MAF wont register the change. The o2 sensors should if the car is in closed loop operation, but in open loop Im not sure it will register the difference. I think it will run a less optimum ignition timing map when in open loop to prevent detonation resulting in crappy performance and the chance of detonation.

The Unichip should be able to get around this by adding more fuel on top of the maps.
 

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Ethanol is a solvent, so if your fuel lines etc aren't engineered with the knowledge that you're pouring a solvent into it....who knows what could get eaten through?

CRD pulled 30rwkW out of their "light to medium" tune GT-R adjusting it from 98RON fuel to Optimax Extreme.
The factory ECU should learn around it and be able to extract some more power out of it, and my Unichip tune is already a little rich for regular fuel, so my setup should be OK with it.

However, I'm not putting this stuff into my car unless I'm planning on emptying the tank quickly. Being a solvent, I'm not going to let it sit in the car for a week or two.
The new Shell Optimax Extreme has only 5% Ethanol content. This small amount will cause absolutly no problems at all to any gasoline powered vehicle in production.
In fact it is generally accepted that up to 20% Ethanol can be used in almost all petrol engined vehicles without any re engineering.
Brazil has a mandated 30% Ethanol fuel & some model vehicles ( but not all ) do have to be rengineered for the Brazil market.
 

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Pete - any knowledge / speculation on why Nissan wouldn't want pre-2004 cars using it?
 

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Pete - any knowledge / speculation on why Nissan wouldn't want pre-2004 cars using it?
Sorry to answer a question with a question.
But where is this Nissan pre 2004 warninig, or non recomendation information available.
And is it specific to Shell Extreme or Ethanol blended fuels in general ?
 

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Nissan have come out and said cars pre 04 should not run any ethanol blend, cars built after 04 can run max e10 but recommend e5

It was published in either Wheels or Motor mag, i cant remember which, in response to a letter the editor sent out to a whole bunch of manufacturers

Id like to know if the unichip could take advantage of the extra ron and boost power
 

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Anyone who uses "top Tier" fuel - IE Chevron and many others- Is running with a minimum of 8% to a maximum of 10% Ethanol. "Top Tier" requires the addition of ethanol

If you doubt it go to the "top Tier" website and read their specs.

Ethanol up to ten percent is approved by all automobile manufacturers and has been since the middle seventies.

I personally spoke to a BP fuels specialist who stated that BP/Amoco adds Ethanol to their fuel in many but not all areas in order to meet emission requirements as an oxygenator, and in other areas where it is economically to their advantage.

There has been controversy in Australia because there were suppliers caught adding more than the 10% allowed there, greater than 10% can, according to manufacturers, degrade fuel system components.

Materials experts and every car manufacturer I have read state "There are no harmful effects to any of our fuel system components caused by the 10% addition of ethanol".

Nissan does not state that Ethanol should not be used in the owner’s manual.

Nissan clearly states on page 9-3 of the 2003 Z manual that

"I If an oxygenate-blend, excepting a
Methanol blend, is used, it should contain
No more than 10% oxygenate.
(MTBE may, however, be added up to
15 %.)"

So it is very probable that we have all been running Ethanol for many years without really being aware of it.
 

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JWM, in Australia most fuels have zero ethanol. There was a big push against it a few years back. The high fuel prices are causing the rethink.

Plus the prime minister is buddy with the CEO of CSR (sugar company).

Why do you think I bought shares in CSR early this year. :)
 

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JWM, in Australia most fuels have zero ethanol. There was a big push against it a few years back. The high fuel prices are causing the rethink.

Plus the prime minister is buddy with the CEO of CSR (sugar company).

Why do you think I bought shares in CSR early this year. :)

That's a real shocker!!

I thought it was just a little over a year ago that they had a big scandal with distributors adding too much ethanol!!!

In the late 70's Citgo marketed "Gasahol" here with 10% Ethanol, but it was more expensive and didn't fly.

Environmental/pollution regulations are really giving Ethanol a boost because of it's oxygenation properties here.
 

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Sorry to answer a question with a question.
But where is this Nissan pre 2004 warninig, or non recomendation information available.
And is it specific to Shell Extreme or Ethanol blended fuels in general ?
Its on the Shell web site, but more importantly its also here.

They refer only to "ethanol blended ULP"
 
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