Quote:
|
Originally Posted by rubix777
I had that same problem when I installed the intake, so I took it out. I think one of them is for the EGR connected to the resonator, and the other one connects to the intake manifold. I tried plugging up those vacuum hoses with caps.
Also something bad about not connecting those 2 extra tubes, I noticed that the rev sustains a second longer all by itself. Meaning, you bump the gas, but the engine keeps reving for 1 second longer.
As for the engine getting louder, probably because the ECU isn't used to this change
|
NO, the reason his engine sounds louder is because the plastic stock air box and tubing keep the sound muffled. Thats why it is used by OEM manufactorers. It's a trade off, less airflow and performance for a lot less noise. Joe consumer wants a quite car, and in general will accept less performance for this to a certain extent. Thats why the OEm's use this design. The CAI will flow more air, cooler denser air, so it will make more noiser right there. To add to it, the metal intake tubing is a lot louder. It doesn't muffle the sound like the crappy stock plastic peice, it is designed to smoothly flow a greater amount of air. The stock peice is designed to muffle sound and keep quite. The metal resonates the air differently, not muffling the sound like the stock peice. The result? A lot louder sound and more noise (besides the better air flow and cooler, denser air for the CAI). This louder sound is normal with any CAI or a short ram intake. It has nothing to do with the ECU "not used to the change." It has everything to do with the sound no longer being muffled, since the stock plastic intake designed to muffler sound is gone, and in its place, metal tubing, which resonates differently and is much louder. It's normal and perfectly fine.