| As with building up any vehicle for power, vw tdi | | | | can be performed in which the muffler and resonator |
| performance starts with the basic modifications first. | | | | are removed and a straight pipe is put in their place. |
| The vw tdi will get its biggest two gains out of a tdi | | | | This opens things up a little and removes the baffling |
| chip or module and out of tdi injectors. Your average | | | | of the muffler so that the exhaust can flow more |
| chip or module upgrade will give about a 20% power | | | | freely. The second tdi exhaust option is the aero |
| increase. A tdi injector upgrade usually yields about a | | | | turbine muffler. The inner design of the muffler works |
| 20% gain as well. If the right combination of tdi chip | | | | the same as a jet engine to increase the flow of |
| module and injectors are used even more will be | | | | exhaust even more than what a mufflerectomy does. |
| gained. i.e. (Van Aaken Smartbox & Van Aaken Smart | | | | The inner design splits the air via an air foil. The faster |
| Power Nozzles) Those are the most basic vw tdi | | | | air moves through the center and the slower air |
| performance upgrades. | | | | moves around the outside of the air foil, the slower |
| Another basic vw tdi performance modification is the | | | | moving air then re-enters the main air stream through |
| tdi exhaust. If you are going to increase fueling you will | | | | inlets that go down the sides of the mufflers inner |
| in turn increase EGTâs (exhaust gas | | | | cylinder. This recombining creates a vortex that lowers |
| temperatures). So to keep temperatures lower and to | | | | the tone of the exhaust and dramatically reduces back |
| help increase performance of the vw tdi even more, | | | | pressure by increasing the flow of all the exhaust that |
| one of two things can be done. One a mufflerectomy | | | | moves through it. |