Fuel Question

[Edmonds]

Hi just found out my skyline has had the ecu tuned to run e42 fuel. I am wanting to know if I need a retune to run 98 pump fuel, previous owner said its ok to run 98, but would like to find out what others think, just to be certain its ok to do. Thanks

[wedge_r34gtr]

yes definatly requires a re-tune unless it's set-up to run different maps for varying ethanol content.

Weird thats it's been tuned to e42 and not a specific e70 or e85 blend.

[gazza750]

I would be quierying why it was tuned for ethanol mix when ethanol is not available @ pumps here in the west

[Hanaldo]

I would be quierying why it was tuned for ethanol mix when ethanol is not available @ pumps here in the west

Why query it? Plenty of cars still running on ethanol here, it's not like it's hard to buy it by the barrel, it's just expensive. I think you will find this also explains Wedge's question; ie. because ethanol is so expensive to run here, ~E40 is a common blend because often you won't make a hell of a lot more power with E70 or E85 so why use the extra ethanol?

OP, do you know if the ECU has a flex-fuel setup or just a straight E42 tune? If it is only tuned on E42 and not with an ethanol content sensor, then it will definitely need a retune to run straight petrol. If it has a flex-fuel setup then 98 will be fine

[masTers]

What car is it?

[wedge_r34gtr]

Why query it? Plenty of cars still running on ethanol here, it's not like it's hard to buy it by the barrel, it's just expensive. I think you will find this also explains Wedge's question; ie. because ethanol is so expensive to run here, ~E40 is a common blend because often you won't make a hell of a lot more power with E70 or E85 so why use the extra ethanol?

OP, do you know if the ECU has a flex-fuel setup or just a straight E42 tune? If it is only tuned on E42 and not with an ethanol content sensor, then it will definitely need a retune to run straight petrol. If it has a flex-fuel setup then 98 will be fine

Fair enough. I just assume eveyone is as lazy as i am and would rather the ECU sort the mixture %, rather then me doing it in my garage.

Can you recommanded an E85 supplier in Perth?

[Stinky Rooster]

homebrew ftw

[Hank Scorpio]

Can you recommanded an E85 supplier in Perth?

RPW (Racing Performance Works) in Osborne Park

[SmItZ]

Can you recommanded an E85 supplier in Perth?

All-Star sell 20 gallon drums