Nissan 350Z (Z33, 2003-2009): Power mods
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What are the best power mods for the Nissan 350Z (Z33, 2003-2009)?
It depends on the car’s condition and how you use it. These are the 1 power build entry we have sourced for this car: VQ35DE plenum spacer (350Z 2003-2006, G35) (Reported). Each lists caveats, related problems and sources so you can match it to your goal.
VQ35DE plenum spacer (350Z 2003-2006, G35) Reported
A 5/16-inch plenum spacer is a cheap bolt-on for VQ35DE engines; the maker claims 11-13 hp and an owner guide says about 15 hp on non-Rev-up G35s. It is not for the VQ35HR.
Caveats: Rev-up engines gain little from the spacer alone. Not sold for California.
Parts: Motordyne 5/16" plenum spacer (VQ35DE)
Sources (3)
- 350Z 5/16" Basic Plenum Spacer — Motordyne Engineering (maker's store page) (vendor article; read 2026-10-26; full page read)
- Plenum Spacer & MREV2 Manifold installation (VQ DE series engine only) — Motordyne Engineering (maker's install instructions PDF) (vendor article; read 2026-10-26; full page read)
- Infiniti G35: a buyer's guide — Grassroots Motorsports (forum post) (forum thread; read 2026-10-26; full page read)
More for this car
- All Nissan 350Z (Z33, 2003-2009) fitment answers · Z33 common problems
- Newsletter archive: past issues with every new and corrected entry
Report a correction — spotted an error or have a better source? Email hello@chassisdex.com.