Ahaa!

I bet your thinking spark plugs!

Well not at all...

I'm thinking about the connecting plug types used on electrical connections.

Say for example, the types of connector used on the injectors and coolant temperature sensor.

Any one got any idea?

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09 XT660X:

CCC Stainless Rounds, Stage 1 DNA, Stage 2 DNA, PCV With Custom Autotune Map, PCV AutoTune, Home made O2 eliminator, Self machined Fork Spacers, DIY Autotune Switch.