I am so glad some people here speak for truth. The truth that I've learned from my old g35 NA build. I saw people post here how day and night (power) different after installing a CAI or a CBE or HFC/TP. Whenever I see these I just sat back and LMAO. Coz I know it's not true. I had almost all, but nothing feel faster then my stock setup. LOL. If you can't beat a M3 stock, you still can't beat it after all the bolt-ons.
That being said, I am still investing money on NA mods. But it's more for the sound and look. Not saying NA mods are completely wasting of money. But if you are purely looking for the big/noticeable power bump and willing to sacrifice the factory reliability and the life of your motor, then I'd say save the money go for FI.
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09 PW 370z Nismo | K&N Drop Ins | HKS Hi Power | Berk HFCs | Work Meister S1 3P | Project Kics R40 Neo Chrome Lug Nuts | KW V1 | SPC rear camber arms/toe bolts | Southbend Stage 3 daily clutch | Southband 19Ib Steel Flywheel | ZSpeed CSC
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