I can tell you a bit:
It does work, but those tiny pumps are way overpriced. you need really good pressure- such as a pressure washer with about 1200psi or higher. I've seen such a build up, looks strange but works.
I will seek for some pictures( I still have them somwhere)
The more methanol you add, the more power you gain.
The difficulty is to reduce head temperature constantly. That can only be obtained with a different setup.
An increase in economy ? I doubt that, the unit istelf is way to expensive to get any savings back.
The use of Bio Diesel is strictly forbidden with an XJ.
I wouldn't risk the mixture of veggie.
An overhaul of a leaking pump is expensive. The VP 37 does not like it at all.
In the intercooler can't be any soot- only oil. A sharp ride cleans that out.
you are right- the difference can be noticed.
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