Howdy all. I've got a G6CU fresh from the dealership with only 20k miles on it. Where do I start for performance? I would like to increase low end torque and increase overall top end power. I am comfortable with spending a grand or two, and I can do my own work on the motor. Where do I start?
From what I've heard about them (I have a 2002 XG350L) we can change out quite a few parts with the ones in a 99' Mitsubishi 3000GT. Which would make upping the power safer & more reliable in the long run. They have made Superchargers for the Sigma when it was used in the Mitsubishi Pajero, and I've heard of twin-turbo setups using a stand alone ecu like Haltec or AEM and the like. I'd like to do a remote-ish compound turbo setup for mine, but I need a new trans or will just replace the defective torque Converter & trans fluid pump & put in new solenoids & a filter plus tighten up the valve body etc etc while in there. New planetary gear set couldn't hurt either. But really from what I've seen & learned about these is that turbocharging is the best way forward. Probably using ethanol & water/meth injection. But I'm definitely upgrading the Crankshaft, piston size (port & polish, bore & maybe stroke as well), new valves & springs that are better made, better cams or customize the cams, better bearings & seals throughout, & a better/custom cold air intake & exhaust system. I've already replaced/upgraded almost every sensor using WVE or NTK (same thing really) WVE Ignition Coils are great as well. H&R Lowering Springs are pretty much up next as I've replaced the whole suspension system except for the front lower control arms & the coils by using either Moog or Mevotech Supreme parts. Bit by bit. New rotors & pads, new API Bolt-on exhaust which sounds amazing (not loud, droning, & obnoxious like most chambered mufflers & Glasspacks) & makes the car sound & lot better than stock. Long story long, sorry about that. I'd say beef up the internals & go straight to turbo with a nice standalone ecu. Just be careful when choosing your turbo & you should get what you want out of it. Plus you can use nitrous to spool the turbo, so lag isn't really a thing these days when it's done right. Keep us up to date on your progress! I'm not at power mods yet, but I'll be there someday soon!