I am looking for quick and condensed information on what are the exact specific meth injection systems which are best for the audi 3.0t engine.

I am looking for the following benefits

- lower IAT
- higher octane
- cleansing effect

With that said I want to know the top 3 meth injection systems and why... I am looking for an all around solution that will last a long downtime. I also want to know the downsides to each option if any.


I think that meth injection is the best performance mod for this engine based on my recent research.