LPG Removal

[prj]

E85 is definitely a better idea, because you can re-use everything and it actually lowers EGT's.
You will need bigger injectors and an uprated fuel pump though.

And of course - a remap to take advantage of it

[Jonnybravo]

My bosses old s8 was low mileage when we converted it but had well over 200k on it before I left the company, that was on a prins setup.

From what I recall the newest brc systems allow ignition changes and offer a full mapping table, I'd have to dig out my manuals which are slightly out of date now but I can maybe scan in some of the info on the software they use

[prj]

My bosses old s8 was low mileage when we converted it but had well over 200k on it before I left the company, that was on a prins setup.

From what I recall the newest brc systems allow ignition changes and offer a full mapping table, I'd have to dig out my manuals which are slightly out of date now but I can maybe scan in some of the info on the software they use

I don't really see how a piggyback can advance your ignition. Retard it - yes, advance - no. For that you'd need a trigger.
That's the thing...

And N/A cars will run fine on LPG - but to get best fuel economy and performance you will need to re-tune the timing maps on them.

[Jonnybravo]

I couldn't answer that, you know far more than I do on the subject of ecus !

I'll still look through the software as it might be of interest to others.

[HuwSy]

E85 is definitely a better idea, because you can re-use everything and it actually lowers EGT's.
You will need bigger injectors and an uprated fuel pump though.

And of course - a remap to take advantage of it

Hows a lower EGT an advantage, or does it reduce the risk of the glazed looking head previously pictured?

Think i may take this approach then, does bigger injectors involve drilling the head wider? And would the remap be to retart the combustion for this? Would this pose any advantage when on normal fuel too if itd getting more fuel into the chamber and would i need to accelerate the combustion when on normal fuel?

Although I may need to find a few more places willing to sell fuel 1st.

Thanks

[prj]

Injectors are plug and play.
If you want to switch between Gasoline and E85, you'll need a setup with two sets of maps for everything.

As for the other questions - pick up a book... there's only so much you can explain on a forum. A book will do it much better than me.

[mouse]

@mouse my understanding that LNG is lower octane from reading previously but would be interesting to find out if its viable. Although i spent ages trying to wouk out how much a litre equivalent would cost converting the volume used by energy firms and pressure to no avail so i have no idea if it was cheaper or not at the end of it all.

I actualy meant CNG rather than LNG (compressing natural gas into a liquid state is a huge amount of work, where as gas from a domestic supply can be used to fill up a CNG tank with a specialised compressor ).
I was reading a bit on this company's website recently http://www.advancedfuels.com.au/natu...-vehicles.html

I also read from another (dubious) source - wikipedia - that

CNG can be stored at lower pressure in a form known as an ANG (Adsorbed Natural Gas) tank, at 35 bar (500 psi, the pressure of gas in natural gas pipelines) in various sponge like materials, such as activated carbon[11] and metal-organic frameworks (MOFs).[12] The fuel is stored at similar or greater energy density than CNG. This means that vehicles can be refuelled from the natural gas network without extra gas compression, the fuel tanks can be slimmed down and made of lighter, less strong materials

I wouldn't really consider this on the S2 but it would be nice on an NA V8 of some sort..