I am not sure if this has been discussed but we can now buy petrol/ethanol blend (ethanol 10 percent) at the pump. it's new for down here in NZ at least

Will the coupe run on it? do I want to run on it? I seem to remember something about ethanol increasing the Anti-detonation properties of fuel, which sounds good

And the top gear review saying the Koneg..... CCX making 806bhp on petrol and over 900bhp on ethanol blend

Cheers

Not as simple as that. Ethanol rots fuel lines, plastic fuel tanks, etc so you'd need to change most of the fuel system. Also you need to throw a lot more ethanol at the engine to develop the same power (27% IIRC) so you're going to need bigger injectors, a remap.....

The Koeniggsegg was built to be dual-power so already contains maps for both fuels. Because ethanol conducts electricity (petrol doesn't), the car can identify what fuel it is running on and use the appropriate map

Also, the petrol/ethanol mix (ethanol is useless at cold starting so the fuel has some percentage of petrol) separates if water gets in and nothing will reverse that situation

Thanks - I just edited the above post it is 10% ethanol/90% standard pertrol. I can't imagine this has the bad side effects on a normal car as they are selling it at the pump as a petrol alternative, would 10% be alright for plastics etc?

What are positives of ethanol

Cheers

I think the 10% blend is OK as I believe one of the petrol companies use it in their Super Unleaded, as I *think* its a reltively cheap octane booster.

Its the BioEthanol you need to avoid which is 85% ethanol, which as Nyssa7 will probably end up rotting fuel lines etc. There was a thread about it on here a while ago, I believe someone was considering trying it in a standard (as far as fuel lines etc) coupe.

Ben

Hello,

I think we don't need to change anything to run E85 on coupe except the fuel maps of course.

The reason is the 16V 2000 NA coupe was also sold in Brazil. Just take a look at EPER and compare tank, fuel lines parts between brazilian and standard models : same part numbers. Fiat is selling a lot of cars in Brazil so I suppose most of their cars are ethanol friendly.

correction : brazilian NA 16V got different tank, fuel pump and fuel lines !

So maybe material quality isn't an issue. My only concern is about the fuel pump wiring. I disliked the way it was done when I fitted my walbro pump. According to several source E85 conductivity isn't an issue but I will probably insulate the pump wiring before doing any try.

I'm running an updated FPR and larger injectors so I think that using a standard fuel map with E85 should work pretty well. I just need to install a switch to select the ecu map I want according to the fuel I'm using.

Yes E10 is ok for standard setup, the only downside is you will run slightly leaner than before.

Jerome