Very good answers from our forum vets. I would choose post MAF tubes over Stillen Gen II's based only on price. The gains will be 95% the same. One thing that people had failed to mention that is documented in our
http://www.the370z.com/tuning/55417-...ns-thread.html is tuning. If you replace your exhaust cats and intakes, it's a great idea to get it tuned.
If/when you start craving more power, might I suggest this?
http://www.z1motorsports.com/g37_370...oducts_id=7223 I'll caution and say they don't work with the Motordyne ART pipes. They require VQ35DE TP's/HFC's/ART pipes.