Bioethanol vpower moonshine (moved thread)

[SteveyD]

Yeah Ben we already know all of that lol......... re-read my origional post 

so lets re-cap with this whole topic, in a nutshell im taking into consideration the fact that bio is only 85% pure to start with, so with the vpower and the 15 unleaded i need to get 10-15% of the total mix of all 3 fules to be ethanol, safely increasing the RON of the fuel.

I have just put 4 litres of bioethanol into a nearly full tank of vpower and within 2 miles of driving the difference was amazing!, throttle response and acceleration definately increased A LOT.

so now all that is left to do is crunch some numbers and get this a bit more accurate, at the moment im being very cautious (and guessing at that) with the mix ratio so for tomorrows track day I want to be a lot more accurate and have bought measuring jugs etc to allow me to do so.

Watch this space....................................................................

[SteveyD]

*UPDATE*

Ok so I ran this mix all day on Saturday at my trackday, it goes without saying the car weas driven as hard as it ever could be and with absoulutly no ill effects.  It offered a clear gain in power, more noticible at the higher end of the rev range.  Tony Danza also shared the welth and commented on its success.

To approx 50l of Vpower im adding 7l of bio, Vpower goes in first followed by 7 1litre jugs of bio...simples.

In total im guessing I have put some 300-350litres of this mix through my engine, im not going to do it day in day out because logisticly its a pain in the arse, I am however always going to be rocking a bio mix during any playtime outings so of you bump into me you have been warned 

[Pummy]

If the detrimental effect of these is where the rubber deteriorates, would a conversion to be able to run this not be possible? Are surely we are talking about fuel tank coatings, lines, pumps seals all being changed to a different material to be resistant to it?  This is assuming you want to run full on ethanol at times.

Nice thoughts however, a little bit of low cost moonshine would be good.  I know a few of my local scoob boys run meth to bump up the RON, but they are mapped for it and swapping over to normal in a pinch, is not easy for them.

[cuprak1]

Well done for being brave enough to try 

sounds like a winner nice one mate

[KRL]

Hurdy....you can't run the 999 setting on REVO surely...as thats max boost / max advanced timing / LEANEST FUEL setting!

 

that can only end up in a BIG BANG scenario!

I'm currently running Boost 9 timing 6 and fuelling 9. The dyno's I've been on over the last few weeks show that the AFR is still between 11 and 11.5 and so still relatively rich. All I'll need to do is set the timing from 6 to 9 for the race fuel setting to match the 103ron I should be getting from the octane booster and get some logs to see how it is running.

I was talking to DomT earlier today and his appears to be running slightly leaner than mine even though his fuel setting is set lower than 9. This could either be down to the fuel pump difference (I am running Autotech and Dom APR) or possibly a slight difference in cam lobe wear. Either way it means fuel setting 9 is basically standard for me.

Hi Guys,my fuelling is set at 6 and my AFR is consistently 11.9 - 12.1 on WOT. So when Hurdy says slightly learner it is very slightly. Be interesting to see the results, though it does take a tank to see full adaptation IIRC.

Dom

There are a number of factors that can affect the AFR which you are running - protection mapping and air intake being a couple.  Which intakes are you both running and what kind gs are you seeing with them?

[SteveyD]

Well done for being brave enough to try 

sounds like a winner nice one mate

very long pm reply sent matey.

I wish I could get some kind of trophy for my brave actions but to be honest its only using the same theory that Tesco follow to make cheap 99RON.  Hence the reason you should only do this on Vpower.  Besides I did have a contingency plan involving tank draining and 20L of Vpower before calling VW assist lol.

[Hurdy]

Hurdy....you can't run the 999 setting on REVO surely...as thats max boost / max advanced timing / LEANEST FUEL setting!

 

that can only end up in a BIG BANG scenario!

I'm currently running Boost 9 timing 6 and fuelling 9. The dyno's I've been on over the last few weeks show that the AFR is still between 11 and 11.5 and so still relatively rich. All I'll need to do is set the timing from 6 to 9 for the race fuel setting to match the 103ron I should be getting from the octane booster and get some logs to see how it is running.

I was talking to DomT earlier today and his appears to be running slightly leaner than mine even though his fuel setting is set lower than 9. This could either be down to the fuel pump difference (I am running Autotech and Dom APR) or possibly a slight difference in cam lobe wear. Either way it means fuel setting 9 is basically standard for me.

Hi Guys,my fuelling is set at 6 and my AFR is consistently 11.9 - 12.1 on WOT. So when Hurdy says slightly learner it is very slightly. Be interesting to see the results, though it does take a tank to see full adaptation IIRC.

Dom

There are a number of factors that can affect the AFR which you are running - protection mapping and air intake being a couple.  Which intakes are you both running and what kind gs are you seeing with them?

We are both on EVOM's intakes, mine with a dry filter and Dom's with an oiled one.
Had a little chat about this with Dom the other day and his is pulling 272g/s at 6400rpm and it was still climbing (he has DSG like me). I asked him to project it out to around 6900rpm and it should go to around 285g/s. My car does go out this far (GIAC DSG remap), but I haven't pulled any logs since fitting the EVOMs and GIAC.

[KRL]

^
Ok did not realise you both have the same intake 

With a fuel setting of 9 Hurdy I would expect your AFR to be leaner than 11 - 11.5 at the redline.  Therefore I'm guessing there might be some protection mapping taking place.  This is where the ECU changes the fueling during a WOT run because it detects that EGTs are getting a little to high so it increases the the fueling to lower the EGTs.  Its nothing to worry about, just a nice safety feature of the ECU and possibly an indication that you should lower your fuel setting a little to richen up the AFR mixture.

An AFR curve when protection mapping is taking place would look something like this:


Notice how the AFR richens up at at 3800 rpm, you can also see EGTs dropping at this point.  Try logging this yourself with block 31 for AFR and block 112 for exhaust temps.

After you've logged this and can confirm if protection mapping is taking place then I would suggest lowering the fuel setting.  Actually richening the the AFR will bring you other benefits as well as it should allow you to advance timing more as timing pull will be reduced with a richer afr.