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  • 4 weeks later...

hey just interested to know,

when using 98 people say that 300kw's is the safe upper limit for a stock RB25DET, does using E85 mean that this upper limit is more?

I know that people are getting alot more, like 360kw on stock bottem end, but does that mean over the 300kw with ethanol is safe or just that its happening.. and not necessarily safe. is it to do with the temp/detonation or the stress on the parts?

just wondering cause i want to use E85 and not sure how much boost/power is a safe limit, dont need any rebuilds or gambles with the safe limits..

Edited by SliverS2
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e85 is alot nicer on engines and a good tune will make the engines "safe" number higher, so a safe 300kw from a rb25 e85 will take this to 340kw as power is made off timing not boost ie 15psi 300kw 98 / 15psi 340kw e85

this fuel is win/win

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e85 is alot nicer on engines and a good tune will make the engines "safe" number higher, so a safe 300kw from a rb25 e85 will take this to 340kw as power is made off timing not boost ie 15psi 300kw 98 / 15psi 340kw e85

this fuel is win/win

Its just a shame that it isn't more readily available ALL over Adelaide.

I hope with the increasing amount of flex fuel cars coming to the market that this will promote more servos to stock E85.

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well 2 decent places exist but yeh i hear what ur saying

u blokes need a flash tuner set up like us fraud boys flash in flash out easy as that

is there any sort of multipule switch tune ecu's out there for flyline?

we even has a j3 chip back in the old e series falcon yonks ago that was switchable

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Shall be tuning the new found love of the 3 diamond variety on e85 in the next week or so.

Atm it stands at: Standard evo 7, hks dump + apexi exhaust with high flow cat, running very lean and kicking back to safety map 18psi produced 184kw at all 4 up to 5,800rpm limit (didnt want to go higher due to leaning out but it would have been around 200-210 on usual 22psi by the looks of things)

Bought: 1050cc injectors, aeromotive 340lph pump

e85 Results: in a weeks time :) prediction 240 - 250 at all 4, not bad for a standard car eh ;)

Edited by SkyHi_33
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Shall be tuning the new found love of the 3 diamond variety on e85 in the next week or so.

Atm it stands at: Standard evo 7, hks dump + apexi exhaust with high flow cat, running very lean and kicking back to safety map 18psi produced 184kw at all 4 up to 5,800rpm limit (didnt want to go higher due to leaning out but it would have been around 200-210 on usual 22psi by the looks of things)

Bought: 1050cc injectors, aeromotive 340lph pump

e85 Results: in a weeks time :) prediction 240 - 250 at all 4, not bad for a standard car eh ;)

Thats the great thing about evos, running dual maps on the standard ecu

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Shall be tuning the new found love of the 3 diamond variety on e85 in the next week or so.

Atm it stands at: Standard evo 7, hks dump + apexi exhaust with high flow cat, running very lean and kicking back to safety map 18psi produced 184kw at all 4 up to 5,800rpm limit (didnt want to go higher due to leaning out but it would have been around 200-210 on usual 22psi by the looks of things)

Bought: 1050cc injectors, aeromotive 340lph pump

e85 Results: in a weeks time :) prediction 240 - 250 at all 4, not bad for a standard car eh ;)

My mate just bought a evo6 with only an exhaust and fuel pump, got steve knight to play around with it and made 250awkw on pulp. Steve did tune it on 30psi though haha, seems pretty high to me but i know nothing about evos.

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