How can I increase my HorsePower?

[Ghostchillz300]

I have a 1990 Na Automatic but I want more HP If I can get some ideas from someone and I can do some research I'm thinking about adding an air intake and a whole new HKS exhaust.

[ShiroZ32]

Welcome to NICO!
For the N/A i would say do bigger injectors and an ECU tune.
However, i suggest you read through this first: destroying-the-world-in-your-z32-tuning ... 94781.html

[nissanfreak12]

Bigger injectors will do nothing for the NA, just a waste of money. Best thing you can do the Z is maintenance up to date, basic bolt ons, exhaust, intake(Selin Dual intake I heard actually helps with HP), pulleys, etc.. The best money spent would be suspension upgrades, Wheels, and brakes. If you decide to go TT, just remember some things will not transfer NA to TT engine wise, but suspension and brakes will.

[nissanfreak12]

For injectors, I would recommend the newer style, but stick with 270's.