I put these on my 84 when I was setting it up for CA smog. Wrong. Ran like
crap, wouldn't pass.
Went back to the 3 prong Supers I have been using and all was fine.
Probably has to do with a weak coil.

Your milage may vary, some have had great luck with them. I am going to
stick with the lucky three.

You want a set of 4478s I think? just about brand gnu. Shipping costs only.

tim in san jose

>
>Anyone use Bosch Quad 4 plugs in their van?   The local stores
>(autozone/pep boys) dont carry them but I seem to have seem somewhere to
>get them for my 2.1L ?
>
>Anyone use them?   Any good sources to buy them?
>
>Thanks,
>
>Jason D.
>90 Westy

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