Jump to content
SAU Community

Recommended Posts

No, they all vary slightly... But it makes very little difference to your tune.

If you tune on the leaner fuel (United) it will run fine on any e85. (Caltex, Powerplus, Drum e85.)

I have been running various e85 fuels over the last 4-5 years with 20 or more tunes, some very lean, some rich. I had quite a few issues during that time that should have blown my engine, like wastegate lines popping off (running over 50psi) and fuel reg/map sensor hoses leaking vac, leaning the tune out to 20:1 on cruise. It still ran fine, no melted pistons or det.

It really is the ultimate fuel for turbo cars, no matter what pump it comes from.

No, they all vary slightly... But it makes very little difference to your tune.

If you tune on the leaner fuel (United) it will run fine on any e85. (Caltex, Powerplus, Drum e85.)

Thanks for the reply. The reason I ask your opinion is that out of the three tuners I have spoken with, two of them have been adament about using either an eflex sensor as Caltex and United's ethanol content can wildly vary, or sourcing from a racing supplier to ensure the ethanol content remains consistent.

So basically what your saying is that regardless of variations of ethanol content, one tune on United e85 is enough to cover the variation in ethanol based pump fuel, and the variation in ethanol content won't damage my engine regardless?

EDIT: This is for a track car only if that makes any difference. Also don't plan to be running huge amount of boost either.

Its true that the ethanol content can vary a fair bit but if the tune is safe on the highest content of ethanol eg united stuff can go up to e90 anything thats got more petrol in it eg e70 etc your car will only run richer which wont hurt your engine anyways. Mate speak to Yavuz at unigroup engineering give him your car and never worry about ethanol content or any of the other rubbish these other "tuners" have been feeding you ;)

Hes tuned both my cars both drive amazing have great fuel economy and have NEVER died :)

Had my car tuned on united over 4 years ago and I have never had a drama with it.

My tuner has tuned literally hundreds of cars on e85, a lot of cars making 1000+hp and united is always the fuel of choice.

Thanks for the reply. The reason I ask your opinion is that out of the three tuners I have spoken with, two of them have been adament about using either an eflex sensor as Caltex and United's ethanol content can wildly vary, or sourcing from a racing supplier to ensure the ethanol content remains consistent.

So basically what your saying is that regardless of variations of ethanol content, one tune on United e85 is enough to cover the variation in ethanol based pump fuel, and the variation in ethanol content won't damage my engine regardless?

EDIT: This is for a track car only if that makes any difference. Also don't plan to be running huge amount of boost either.

Exactly. The only reason you would need an ethanol content sensor is if you plan to run petrol one day and e85 the next, without draining the tank.

A 10% ethanol variation is only a 2% fuel variation, and perhaps 1/2 an AFR point. As long as it goes richer not leaner there will be no issue at the track or on the road. Sourcing race fuel in drums will only help lighten your wallet.

Why won't you be running much boost? My stock VQ loves track days at 30psi... :)

  • Like 1

Who in sydney is famous for tuning on E85? I'd like to hear some feedback from the people. How does Nistune go for E85?

I have to upgrade my fuel system before I get tuned regardless which fuel I run so E85 is looking good. Also the United at Dee Why sells it and I have an empty 200L drum in the garage

Most of the tuners do it now, jem have a good reputation on it or if you happy to go north a little dvsjez has some great results and will go the extra mile to make sure it's right

  • 3 weeks later...

Why would you stick another ethanol pump right near the other stations? The map shows they are all stacked into the same area of Sydney...

Save on transport costs maybe.... Lol. Clowns!

I mentioned to SK when the new "Yagoona" United servo got E85 and he reckoned that a while back when the price of all fuels was really high in Sydney the dough was going into new tanks that are ethanol compatible .

I agree it's easy enough to tune for E70-E85 and the only disadvantage is you'd use more fuel with the higher petrol contend mix . If you were tuned to run exclusively E70 and the light load and cruise mixtures were set for economical running it's real easy to bump E85 up to E70 . Assuming they are 15% different that's a whole 8.25 litres of petrol in a 55L tank so if you were dry adding that then filling with E85 is no drama . Close enough to 2L per 1/4 tank .

I was reading recently that late flex fuel cars don't use these sensors and if that's the case they must have really sophisticated oxygen sensing and knock sensor systems and the ability to self learn really fast .

A .

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Kinda glad I never got to this ..    https://www.facebook.com/groups/1483859159195077
    • @GTSBoy This method was able to get readings of -10 to -2, so it looks like its monitoring.  Now I need to figure out why the vacuum on the line provided isn't alternating with manifold pressure.  I went with 2 lines that an RB25 tuner recommended but I'll get a longer hose and try directly off the back of the manifold.  He may have been used to OEM intake setups while I have a DBW setup that removed the MAF and IACV.  
    • I work at a car detailing and tinting shop called Quark which gets all manner of German cars in usually (mainly due to a contract with Mercedes Benz Kita Osaka, BMW Nishinomiya and others) but every once in a while something special comes in, like a fully restored 1972 HS30 Nissan Fairlady 240ZG... The shop owner had immediately started applying film to the windows as soon as it was in the shop so the interior was completely covered in towels and plastic sheets. But I could get a few photos of the engine bay which was restored like new. Such an amazing car to see in pristine condition in Japan these days.  
    • Was going to say the car pulls up nicely everywhere, especially going into that last long right hander before the main straight. Looks like a lot of fun.
    • Hey Dave, welcome aboard! Good to see another soon-to-be Stagea owner here. The wagons are awesome — plenty of space, still got that Skyline DNA, and loads of potential if you’re into mods. Definitely post up pics when you get it, everyone here loves seeing new builds. What model/year are you looking at?
×
×
  • Create New...