What is the first Mod that you did your tibby??
I Definately recommend it. It really works well with my other mods (9.2 sparkco wires w/Bosh Platinum +4 plugs, OBX strut bar, 16x7.5 chrome rims w/ Khumo's + the other mods that i mentioned earlier) My car idles around 800rpm's and has a slight "rump" sound to it. The car feels like a totaly different animal with the combo of mods. More to come. Don't forget to look at the Elantra Zone for installation instructions.. It helped me a whole lot!! Good luck to you



