There isn't one. The stock manifold has proven itself over and over against a number of challengers.
Basically, the aftermarket manifolds are not worth the money for NA. The power gains are minimal (or negative). You'll need a lot more modifications to gain anything of note. But by the time you get there, you might as well have considered a basic SC or turbo kit.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
Last edited by JARblue; 02-12-2020 at 11:53 AM.
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