Originally Posted by
bluef250
Is there a performance advantage? The standard plugs are so much cheaper.
Performance: A bit yes.
Price:
Not really, cheap plugs are cheaper not matter what kind they are. OD turbos are cheap, GRP standards are expensive. You just see a lot more cheap standards than you do cheap turbos.
A good turbo of the right type in a well tuned motor will last longer. So what's cheaper: a $5 plug that lasts 4 tanks or an $11 plug that lasts over a gallon?