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RE: Bosch Platinum +4 plugs

I just recieved my new Bosch info on the +4 plugs-not a turbo car(Audi
or otherwise) listed in the application guide. I think they realize that 
they are not for all applications finally. They do have a section about 
a mony back guarentee if you dont notice an improvement in idle, power, 
etc. Maybe they will work better than the old style, they could'nt be 
much worse !
Ron Wood-Audis a plenty