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Your missing the point. A car wil get as much as a 40kw increase by switching to e85 over premium.

Im not fighting the fact that it is an enviro fuel. All im saying is the prformance benefits are quite large. So if you think tyres is what make horsepower in an engne than thats fine. Id rather beleive what my figures say than someones press release.

pretty sure atmo's only gain about half that figure, Willalls have proven that from memory

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Your missing the point. A car wil get as much as a 40kw increase by switching to e85 over premium.

Im not fighting the fact that it is an enviro fuel. All im saying is the prformance benefits are quite large. So if you think tyres is what make horsepower in an engne than thats fine. Id rather beleive what my figures say than someones press release.

LOL I wasn't arguing that it is an envirofuel. You said I was wrong about it being an ecological descision to switch to E85 for the V8 supercars!!!!!

I'm not doubting your expertise in the field of racing. All I've stated is the average JC ( who may drive a mazda 3) is not going to see the performance benefit when it's completely negated by the economy of running it. The General Public don't care if YOU or the minority get a 20%-30% performance boost. I think E85 needs to be a lot cheaper per litre before it gains acceptance by the GP.

99.9 cents all day everyday at the United down Tapleys hill road, is that cheap enough? But somehow i dont see someone in a Mazda 3 switching to e85 for the performance benefit, it really isnt a performance car, i mean the thing probably makes 50kw straight out the factory. The only time they will use it in that sort of car is if it came prepared from factory as a Flex fuel vehicle.

The advantages in a high performance car are clear, the cooling benefit, the high octane reading allowing for engines to run leaner without detonation, smoother idle, less break up on top end and then added horsepower increase.

Edited by Adelaideprosound
pretty sure atmo's only gain about half that figure, Willalls have proven that from memory

I did state AS MUCH AS 40kw, i didnt say they gain that amount. Mine gained 20KW without the tune just replacing fuel and injectors, and with tune went up about 40kw.

If you want to build your N/A engine to run E85 then you can get the big increases seen in the forced induction engines as you can run a lot more static compression.

The problem that i find with E85 that was eluded to earlier is that it's performance qualities are not guaranteed (well from the the servo's they aren't). You must remember that the street cars that are going to run E85 are "multi fuel" cars. These cars run a sensor in the tank to measure the ethanol content and these cars run anything from E10 to E90, as the ethanol content changes so does the mapping which won't happen in our tuned cars. Scorcher do guarantee the % so that is the only place that i will be getting my E85 from if i ever run it.

The best result i have seen is one of my brothers customers cars;

XR6T

PULP 370kw @ 20psi

E85 440kw @ 17psi

That's a 70kw gain running 3 psi less boost, gotta love that.

Edited by D_Stirls
I did state AS MUCH AS 40kw, i didnt say they gain that amount. Mine gained 20KW without the tune just replacing fuel and injectors, and with tune went up about 40kw.

I'd say N/A's dont gain as much as turbo's because they dont have the back pressure from the turbo holding in the heat which the fuel does a great job of cooling, I guess that goes for the inlet air aswell,

If the v8 stupercars could lift there compression then we would see some laptimes getting touched up.

If you want to build your N/A engine to run E85 then you can get the big increases seen in the forced induction engines as you can run a lot more static compression.

The problem that i find with E85 that was eluded to earlier is that it's performance qualities are not guaranteed (well from the the servo's they aren't). You must remember that the street cars that are going to run E85 are "multi fuel" cars. These cars run a sensor in the tank to measure the ethanol content and these cars run anything from E10 to E90, as the ethanol content changes so does the mapping which won't happen in our tuned cars. Scorcher do guarantee the % so that is the only place that i will be getting my E85 from if i ever run it.

The best result i have seen is one of my brothers customers cars;

XR6T

PULP 370kw @ 20psi

E85 440kw @ 17psi

That's a 70kw gain running 3 psi less boost, gotta love that.

Nice, the old henry's respond well to e85, I'd be interested to know how many more degree's went into it to make that figure, at a guess 15+ more than ULP.

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