I was lookin at there web and they have a 6in aluminized exhaust for a little under a grand. All my mods are in my sig. I want to lower my egts cause i can hit 1500 way to easily. Would it help any? I was lookin at a snow performance water/methanol kit but it seems like it would be a pain in the rear to fill up and keep the right mixture. Which would be better the exhaust or water methanol?