hey i have a 1990 240sx and i was wondering what would be some easy bolt-on that would do some major improvement but i already have a exhuast and intake...???

 

ka r hard to get N/A power out of. the only other thing is a Q45 throttle body and an exhaust cam for the intake.

 

header is a big upgrade, especialy since you already have intake and exhaust, and then cams...ka i actually good motor for NA power, how many 4cyl. do you see out there with boltons puttin down around 180ish hp

go to the NA forum and look for the na ka proof or the 200hp na ka threads