12P Flex Fuel Discussion

[vlad01]

I would say close enough to not notice much difference.

I ran e85 for a full tank in my VP and yeah it used a bit more fuel but way less than I expected. lower end torque improved noticeably without any ignition timing changes over what I had already.

I reckon with at least 13 but ideally 14-14.5:1 will get close to the best potential in an NA

[Holden202T]

im more thinking if you had 12-13 comp you can still go back to 98 petrol and tune spark to still be usable, but too much more and you wont be able to have that option. but yeah if you want E85 only go higher lol

[vlad01]

yes and this is why BigG and I are planing to develop a whole new V6 around the fuel. I have figures already on what it should make and they are stupid lol

[Holden202T]

so hurry up and get it to reality with a dyno graph to prove it

[vlad01]

We are working on it. BigG has ordered a few bits.

Im working on the manifold design and have prototyped a few concept parts.

Its not easy as everything has to be clean sheet design more or less as its effectively a nascar version of the v6.

[Gareth]

Shhhh

Exciting times ahead, will probably start an engine build thread once we get started

[vlad01]

Shhhh

Exciting times ahead, will probably start an engine build thread once we get started

I think after we are done. I don't want to give away the designs.

[Dylan]

Maybe going to a lambda system could be easier? Woud that help with BLM trims?

[VL400]

I think the easiest way will just be to mod the final PW. Solves a number of code difficulties and leaves all the AFR readings alone. So wont need to think on the fly what a for example 9.6:1 AFR means for the current ethanol content and stoich value. While not strictly correct I think there will be less confusion and will be easier to implement. Changing to lambda could likely just be done in TunerPro for the XDF and ADX. Need to check that one out.

[Dylan]

Im sure you wiol handle it mate