nicely!they work a little different to how i thought so this was a good thread!glad it forced me to think of ways to get around the flaws too,i like subjects i can think about because im interested in them! are these solely ecu based?ie must they be run off the main engine ecu,OR could they be run off a separate module (ecu if you like) that simply monitors the engine parameters and alters boost accordingly.guess what im asking is,is this for p8 boys only?