Thinking about changing my plugs at weekend simply because its the only thing i think i've not done service wise, and i want to replace all the protective covers on dis pack wires as they are broken down due to the heat i presume, is it worth upgrading the plugs for iridium etc would the t5 benefit from this at all? cheers mick I would imagine the dis pack items would be expensive to replace and i think the wires could easily become damaged by the high temps i would recommend checking them on the s70's, seems to be quite a common problem