well they dont have much of power to start with, but it could be seriously lacking some general maintainence, which i turn may be restricting your engine. Go through this thread
http://www.240sxforums.com/forums/b...-got-my-first-240-what-should-i-do-first.html
http://www.240sxforums.com/forums/b...-got-my-first-240-what-should-i-do-first.html