Great Mod! 05 350z DE
I have a ton of supporting mods for this like Kinetix intake manifold and Silicon intake elbow adapter for the larger throttle body. I felt a difference with this mod! So much so that I went out and had my Z dyno-tuned as I was afraid of the A/F ratio being adjusted too much. I was running a little bit lean with this mod, but not bad. You can safely get away with not dyno tuning, but once you feel the difference you'll want to tune it to squeeze out more...and there is more after tuning it :-) . The install was SUPER easy. Please youtube "350z: throttle body reset" for the 350z/G35 (same procedure) before driving the car post-install.