when should I change the Spark plug

[jason_chung]

I have 45k on my celica. is it the time to chang ethe spark plug?

[nyoneway]

I would.

If you are a performance nut, you should.

If you just drive your car like a average joe, then you should be ok.

[rccelica]

I usually log on as BRYANGTS6SPD, but i recently replaced my plugs with the bosch platinum +4s and i noticed an increase in power and throttle response across the board, i have 30k on my GTS and its a machine! Replace them for only 25 bucks for more power and better gas mileage. peace

[Lord Banshee]

so the plat. plug worked better than our stock idreanum(however u spell that) ?