Hey guys, I am obviously new here, but I did some searching only to not find any answers, so here is my question.

I am wanting to get cold air intake for my second gen. I am looking at either Apexi or Weapon R. Both include piping and filter and such. But I have looked at other people's cold air intake, and I notice that they have a modded looking air/fuel sensor looking thing on some of their air intakes, and others dont. So my first two questions are which of those two air intake brands do you guys suggest (if neither of those, who do you suggest?) and what all do I need to properly have my air intake working properly?


I am also looking at getting a new exhaust system, and right now I am battling between Borla and Apexi. Which of those do you guys suggest (and again, if neither, what do you suggest?)


And lastly, I saw a pretty good deal on a Jet ECM Recalibration Kit, and was wondering how much HP I might gain from this, and would it be worth it over all (the increased horse power versus the cost)?


Thanks a million guys! I really appreciate your help!

 

try to search for 'cold air intake' before getting anything which might not be exactly you would want after some readings

no experience with Borla, always had Apexi,its loud but it works

no info about Jet ECM stuff either, sorry

posting which car you have (engine/model/year), would probably get you more detailed answers

 

Oh yeah, haha, sorry. I have a 1991 Rx-7 Convertible.

I really would like to get my horse power upgraded, and these are the three things that I was thinking would give me the most gains for the most relitively cheapest price.