Has anyone looked into running E85 (85% Ethanol) in their GT#?

I read an article some time back of a company in Europe who ran a dual mapped ECU for running this fuel type.

It was set up so that with a certain ignition key sequence you could switch between maps.

The HP gains on a stock 997.2 GT3 were around the 45 - 50 hp mark

they did not go into too many details though and from what I understand there would be issues with some of the components may need replacing as they are incompatible with E85.

The fuel type itself is reasonably easy to find here in OZ. The local V8 Supercar series runs this fuel type now for racing for "environmental" reasons.

I've not seen or heard of anything more since that article though and was wondering if this was still viable

Regards

Mike

 

I don't think this is a simple ECU reprogram. IIRC E85 is not compatible with stock porsches, you'd need to do some meaningful conversion of the mechanical components before running E85, otherwise you'd risk causing some permanent damage.

 

I agree, they did say not just ECU reprogramming

The article did not go into the detail of what needed to be changed if I recall correctly it just said "some changes" were necessary

but what was interesting was that the end result permitted the use of 93 Octane or E85, so I would have thought that whatever changes were needed could handle both fuel types.

I had just thought with the number of tuning shops around someone on the forum may have heard something of this sort of development.

regards

Mike

 

EVolution Motorsports has dome it with their evomsit software. One of their tuning shops AWD in Florida posted results on that other forum though it was buried in a thread not the main topic

I don't think anything other than the tune needed to be changed. On big power forced induction cars more fuel is generally needed but there was enough capacity in the stock fuel system and injectors for it to all work on the stock components as I remember.

I think the biggest issue on our cars is the lack of a flex fuel adaptive ecu. You'd either have to run an e85 map or a 93 octane map. Without the ability to easily drain the tank when switching between the two means the car will have a transition period where it will probably run like crap

 

Simple ECU reprogramming the injectors are big enough to supply the additional fuel needed. (997 GT3)

AWD Did in a few cars using Evomsit tune.
I run straight ethanol cars since early 90s.
Not rocket science

 

yes you can, with NOTHING but a tune..
however, if you want to maxamize the potential of e85, u would need to get a larger fuel pump, and bigger injectors. thats it. (and a tune obviously).
mechanically speaking the engine needs nothing.

you CAN convert a gt3 into an e85

member tim94nyc is making 500rwhp on a 3.6 gt3 motor.. on e85

 

On the GT3 you don't even need to replace injectors (3.8 engine) they are enough.

I would love to see a 3.6 GT3 making 500WHP, not even ... 500 crank