The GT Momentum Intake is in place. The replacement took only about 40 min to complete, only because I was taking some photos in the meantime and I cleaned up the engine bay a little. There are really no special points of install to mention, other than ensuring that the filter's fabric joint is facing down. When I was editing the photos I noticed that the filter's connector is facing perfectly up and visible through the window. I will rotate it 180 degrees.
The shape of the AFE filter enclosure is nearly perfect. Only one of the bolt attachment points is slightly off (see photo), but due to the flex in the rubber mounting bumpers (you transfer them from the factory air box enclosure) it still reaches the threaded mounting hole. One of the bolts is installed inside the enclosure. A small ratchet with long 10mm socket is required. Doing this with an open box spanner is little difficult.
The intake is in essence as quiet as the OE design. Only in the ECO mode, speeds below 30km/h, windows up, sunroof closed and the climate control off one can hear very slight noise of the BOV recirculation. And you really have to listen for it. Difference is negligble and I like it quiet. I did not want a noisy intake. In terms of components' temperature, after about 20 minutes of hard driving, with engine bay definitely warm, the intake box and the intake pipe were nice and cool to touch. The intake does indeed work well in terms of providing ambient temperature air to the engine.
In terms of driving, in the ECO mode there really seems to be no difference in how the car feels. I could not really tell any and perhaps that is why the ECO mode is there in the first place. Easy driving, early gear changes, very little boost and low fuel consumption
Normal - definitely reduced lag when starting to move from a full stop. The intake also seems to remove flat spots from the power band and feels much more elastic. The engine is eager to rev. It is nice.
Sport - well, the initial lag is virtually gone. The engine is definitely increasing it's RPM faster and feels to pull stronger. Torque steer is increased with the traction control off. Too bad I did not have access to a dyno to perform some proper before-and-after pulls. I am not sure what the actual gains are, perhaps not so much in the top end, but there are definite improvements in the low and mid-ranges. I like this 'god mode' LOL.
Overall I am very happy with this intake and if you have some money to spend it is worth it. And it does look good with the Veloster engine cover. Too bad some sort of certificate is not provided from Hyundai Motors TUIX division as I will have to remove the intake each time I take the car to the dealership for service. I would be then able to prove that this upgrade is indeed sanctioned and approved by Hyundai Motors.
Last edited by GsiTurbo; 04-08-2019 at 09:48 PM.