I know there are bits and pieces of advice through forums, but what would be the best performance spark plugs for my 3.3 ?
I am using NGK Platinums but a lot of guys seem to have Bosch ....
Do we have any mechanics or otherwise who have seen the damage that +4's are supposed to do? I have these plugs and they work great, but if there is evidence that they work too well, well I would like to know.
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