I have a 2k I30. i would like to know if I put in a warpspeed y, b, and a remus muffler with a CAI. wat would be my total gain in hp. break it down please. also i dont want my car to sound throwty i want it quiet at low rpms and louder at high (stock type sound) but i want to increase hp. i know that we have upgraded exhaust so i dont know if it will even give me much of a gain. and is there a way to stop the whistling from the CAI.

 

anyone please? i know its a dumb question i just cant search.