You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
Your better off getting a cat delete + racing filter + ecu for best bang for the buck HP increases. (For some reason even pre 1970 cars have ECU's) NOT the intake manifold + filter upgrade the guide talks about. Im not sure how they came up with an arbitrary +40hp increase with 2 mods.