horsepower

What are some good first upgrades to do to an H22a4. First time owning one and still learning about them. want to do simple upgrades over the summer then pull the engine and do a full turbo build. Aiming to eventually be around 550whp. What upgrades do you recommend to start with to at least...

Hey guys, I finally have my Prelude engine ordered.. with months of research and reading about the options I have for swapping out my B21A1, I finally rounded up the money and decided the B21A1 REBUILD was not worth it without replacing the FRM sleeves. (which I can not afford, nor can I find...

What would you recommend the best cold air intake to put on a 89 si, or even the best intake that will give it the most HP increase?, i have the stock B20A5 in it still

I used this for about 2 track days. Other than that its like new in great condition. (btw i took it off because i have a hole from my old cold air intake and its missing the fender liner so i was scared to get water on it) Anyways It comes with the bpi flowstack and a K&N air filter. Both...