For those who want to know more. Read at your own risk:
http://www.dynopower.freeserve.co.uk/nitrous_oxide/fuels_detonation_preignition.htm

And for those who want the ultimate power from their Vanagon you'll find
a source for a bolt on nitrous oxide injection system here too.  The
engine might survive one or possibly two pushes of that button. ;-0

--
Stuart MacMillan
Seattle

'84 Vanagon Westfalia w/2.1
'65 MGB (Daily driver since 1969)
'74 MGB GT (Restoring sloooowly)

Personal mechanic for:
'70 MGB GT (Daughter's)

Assisting on Restoration (and spending OPM):
'72 MGB GT (Was daughter's, now son's)
'64 MGB (Son's)

Stripped and gone but their parts live on:
'68 MGB, '73 MGB, '67 MGB GT