water/meth injection

[Guy_H]

John,

The benefits are obviously there (and you have proven them yourself)- how do you get engineering approval in Victoria? That would require an engineer approved vented (crash tested) tank mounted in an approved location, with safety cutoffs & approved lines. The engineers approached say a Snow Performance kit wouldn't have a snowflakes chance in hell of getting approved without being completely re engineered.

I understand Advan performance in Sydney have been working on vehicle specific (BMW) water meth tanks built to standard, but don't know if any have ever been approved.

[VWindahouse]

To avoid the engineering issues I would suggest looking into a E85 option.

This "generally speaking" will net greater results in power and has a lower and therefore safer detonation point than water/meth.

You will need to prep your fuel system first. The general rule is you need to at least double your current fuel injector size as well as upgrade to an appropriate pump system usually an inline upgrade . This really depends on turbo size from what I've seen done on other forums where this upgrade is more of a "must have" power modification rather than a last resort point of view.

If you are lucky enough to have a few petrol stations in your area that supply it and you don't travel much then you only need the one tune. However it's a very good idea if your going to use E85 100% of the time to look at approved hardware and lines as standard stuff will eventually fail.

If you are only wanting to use it occasionally for track sessions etc. it's not so important as the guys on Vortex who have been running E85 for years with normal pumps and factory lines will attest. However you need to find a tuner (and I strongly recommend a custom tuner with E85 experience) that can offer easily switchable tunes from standard pump fuel.

E85 offers the best detonation protection as well as having brilliant engine cleaning properties.

The cost can add up injectors, pumps, lines and tune. But when you factor in the cost of a decent water/meth set up and the required tune plus the engineering certification (which I understand is quite high) you may actually come out in front.

Just a thought cheers

[Guy_H]

Good point, E85 on a port injection vehicle is the go - it's legal, uses most of the existing fuel system and is readily available.

On the direct injection cars it's not so easy - the quantity you require through the available hardware (pumps & injectors) is an issue and @ 7000rpm, the injector time width gets pretty narrow