At what mileage did y'all replace your spark plugs? I'm at 81k and the plugs are 100k plugs. does it benefit to replace them early? are there any other tune-up items i should attend to other than fluids? (PCV, ETC.)

Just Done:
Clutch
Trans and Diff fluids
Coolant
Oil Castrol Synthetic
K&N Air Filter

 

I did my plugs at 80k with a valve adjustment.

 

did you notice a difference after replacing at 80K? Mileage or throttle response?

 

i would replace them now. i replaced mine at 55k and they looked pretty nasty. the gap definitely got bigger too, but i'm not sure if track use accelerated it.

 

Wouldnt hurt to do plugs and valves either.