nismodatsun wrote:Any thoughts on spintech stuff? I have always been fond of magnaflow.
I'm sorry, but I cannot answer your specific questions concerning an 05+ PF as I own an 04, but I will give my opinion on a couple of the other items.
Spintech Mufflers - have not owned or do not own one, but I have talked to a few people who do and if you are looking for a highflow, thin muffler and don't mind a bit of noise, then u might like the spintech I'm sure you've done some looking at their website and the typical youtuve research, and yes, spintechs are as loud as they sound. If I'm not mistaken, spintech is a favorite amount oval track racers because it meets the requiremnts to have a muffler, but doesn't hold anything back in the way of flow.
It more or less behaves as a straight through muffler design, just without the sound absorbing fill material. Spintech can tuck in close to the body to give you that extra bit of ground clearance if off roading is your thing. Lots of V8 guys running around with spintech.
nismodatsun wrote:Is it possible to run dual exhaust with a x pipe and have it dump under the car instead out the back?
I wouldn't have the exhaust dump under the car. If you want to cut the exhaust "short", at least do a side exit as to not have the gasses dump right under the passenger cabin. By dumping short, the customer in the vid looked like he was trying to save some weight, some money and be a bit stealthey at the same time. Personally, I would add the extra 5' of pipe and go all the way to the rear. You can then choose to have exposed tips or make them appear as stock. Keeping them together, ala '04 GTO style, is also an option instead of splitting the spare tire.
A custom built exhaust will give you some flexibility in the routing options and may even save you a few buckscuz you aren't paying for a name. Also, most good exhaust shops have pre-bent pipe anyway, so all they have to do is cut and weld.
I didn't see the 05+ PF w/ 4.0L listed on the Stillen page. Only the Armada PF. Does Vortec or Eaton make a bolt on system?