240SXer wrote:What is the 1st mod I should do? Electric fan? INtake? Exhaust?
Well.... if you really want to have a drastic improvemet, do intake/header/exhaust all at once!
Otherwise, I would suggest Intake first. This point is debatable and everybody will have a dfferent reason. But I would suggest intake because it is the cheapest out of the three, and it seems to make the most immediate difference. You can also get away with a cheap "home made" intake for about $50, that will perform nearly as well as an AEM or Injen.
The electric fan is going to run you between $200 and $300. There is no cheap alternative.
A good exhaust (one that actually improves performance) is going to be at least $400. You can take the cheap route and buy a GOOD after-market muffler, then have a muffler shop weld a cat-back on there. This will save you about $100, but your pipes and welds will rust years before a quality after-market cat-back like Apexi, GReddy, or HKS.
Internals are a whole other ball game! If you can't do the work yourself, you pay twice as much as you should. This is best left for the wealthy or the mecanially inclined!:D