Is there any1 who can offer any info on some d.i.y engine upgrades that are not ridiculusly expensive?? I was thinking of installing some 'Halo or Splitfire' sparkplugs with 8mm silicone leads but heard that the plug leads could burnout the e.c.u,is this compatable & was going to fit a upgraded filter but only going to connect it the main pipe & not the 1 connected to the back of the grille (oval in shape)..How would this effect the engine??