| This is over in FAQ there on your left. Look over there to learn more on the Z32 ;) Could someone explain boost jets to me? The boost jets come with the Jim Wolf ECU upgrade and are what is responsible for the increased boost. The ECU just makes it safe by adjusting ignition timing curves and fuel curves to run the increased boost and does not raise boost itself.
Boost jets are made of aluminum and look like a bullet with a hole in the center. The boost jets go in the wastegate vacuum lines and serve to block some vacuum signal to them, which "fools" the wastegates into opening less/later for more ultimate boost. Contact welding tips, which meter a certain amount of gas out of a welding torch, resemble boost jets, so many use them in place of boost jets. They are made of brass or some other metal making them sturdier and easier to work with than boost jets. They can be had in many different metering hole sizes, such as 0.045 inch, 0.035, 0.030, and 0.025 inch. Many have raised their boost to 14 psi with the welding tips with the stock ECU and have had no problems, but they don't generally use the boost too long or run their cars at high speed while in the boost for long. Other precautions such as, colder pfr6b-11b(#6) or pfr6b-11(#7) spark plugs are used to ward off detonation. An accurate boost guage(non-stock) and a keen ear is needed to listen for the faintest amount of detonation which sounds like "pebbles in a coffee can." 14psi sems safe on a stock ecu, but for $599 you can have the JW upgrade ecu and have much more peace of mind knowing you have much less of a chance of blowing up your expensive TT engine. Your choice. Chris(Miami)
 STAGE V++++
Going to XV+ and beyond :) Yellow Z STAGE II
Going to XI+ |
