Leon Cupra and E85 flex-fuel
- Thread starter DaRa
- Start date
If he is not changing any hardware on the car, good luck using straight e85, do some research on the Mk7 Golf pages and educate yourself first before putting your engine on the line, your braver than me! Lol
Are you sure you can do the E85 flex fuel conversion?
One of my mechanic friends now started to sell and install these kits and he told me it cannot be done in my car due to the injection system.
Also, browsing the catalog for most places that offer these kits you will see that no cars with direct injection (like the Cupra) are supported.
I would double check and then triple-check
One of my mechanic friends now started to sell and install these kits and he told me it cannot be done in my car due to the injection system.
Also, browsing the catalog for most places that offer these kits you will see that no cars with direct injection (like the Cupra) are supported.
I would double check and then triple-check
Grave digging here, I know...
I was curious about runing E85 on an EA888 Gen 3 car a while back, and can confirm that the fuel systems in these cars won't cope with E85 for long. To do it properly, you'd need to overhaul the fuel system completely, APR produce a kit to do so, but it's very pricey https://www.goapr.com/products/fueling_ea888_gen3.html
I'm sure you could use different cheaper components and do it for less, but the point here is that it'd a big job.
Bonus points: if you're willing to put the time in to research, Brazil is a great source of info for alcohol based fuel systems and associated tuning. They've been running alcohol in cars since the fuel crisis of the 70s, and VW have several manufacturing facilities over there.
I was curious about runing E85 on an EA888 Gen 3 car a while back, and can confirm that the fuel systems in these cars won't cope with E85 for long. To do it properly, you'd need to overhaul the fuel system completely, APR produce a kit to do so, but it's very pricey https://www.goapr.com/products/fueling_ea888_gen3.html
I'm sure you could use different cheaper components and do it for less, but the point here is that it'd a big job.
Bonus points: if you're willing to put the time in to research, Brazil is a great source of info for alcohol based fuel systems and associated tuning. They've been running alcohol in cars since the fuel crisis of the 70s, and VW have several manufacturing facilities over there.
100% E85 is no good but you can mix up to 30% E85 without issues for a little more power. I used E25 daily for a year, about 40000 km.
I reckon the degradation caused by that lower an ethanol concentration would be negligible (ish).
Did you notice a significant power increase? I'm guessing it enabled the engine to advance timing as far as allowed in certain conditions. I'm presuming you also experienced a loss of economy as well?
Yes with JB4 custom map 6 I was able to increase the boost giving a bit more power, noticeable. On a stock car it might not change anything.
Economy a bit worse but E85 is on the other hand a lot cheaper than 98 fuel so I think all in all it evens out.
Hi everyone,
So I did proceed with the E85 Flex-fuel conversion and I am very very happy with it !
Well going from 88€ refill to 32€ is quite amazing considering I do about 80kms every day.
I wanted to give you a feedback after at least 10.000kms but since the thread is active, thought I might keep you informed.
It's a pretty common thing to do here in France, so I had enough feedback to know that it was 100% safe on my car, to do the conversion and use 100% E85.
Hope I won't regret it, but so far so good !
So I did proceed with the E85 Flex-fuel conversion and I am very very happy with it !
Well going from 88€ refill to 32€ is quite amazing considering I do about 80kms every day.
I wanted to give you a feedback after at least 10.000kms but since the thread is active, thought I might keep you informed.
It's a pretty common thing to do here in France, so I had enough feedback to know that it was 100% safe on my car, to do the conversion and use 100% E85.
Hope I won't regret it, but so far so good !
Are you a
I'd love to do this if E85 was readily available where I live.
Are you able to share with us exactly what was changed in the conversion? I'd still be concerned that the standard fuel system will degrade over time - however, that is just a semi-educated guess.
I'd love to do this if E85 was readily available where I live.
I don't have any knowledge so I can't really tell you what exactly they did, you can find a few information here :
Click on E85+ tab :
https://www.shiftech.eu/en/reprogramming/seat/leon/2013-5f-mk1/petrol/2.0-tsi-280
What they did is :
- remap adapted to flex-fuel (no hardware)
- bonus : R600 admission (not needed at all for flex-fuel but worth the price)
- Stage 1 (good I did it because a Stage 1 was already done when I bought it and we realized that it was very poorly done, my turbo would have most likely break in the year)
Sorry I can't provide more information but you could contact them if you want (shiftech)
In France the E85 fuel is very very widely offered, right next to my job area today is : 0.609€/l compared to E5 : 1.668€/l
FYI I went from an average of 15l/100 to 16.5l/100. I could upload the HP/NM graph before/after if interested
Some people said in this thread that no part of the car could handle E85, even if it's a bit too early to say, it looks like it handle it perfectly. (also did contact some people who use E85 for years on their Cupra w/o any problem whatsoever)
Edit : added the commercial link since I did share it on a previous post already
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