Nice, I still need to mess around with different pistons and oils... I have been messing around with too many cars to really work on one.. i got all of my Tekno's within 2-3 months, so I haven't tuned them for the track yet... My SCT is dialed currently, but my buggies setup's are AWFUL.. I'm going to try the 6x1.5 when they get here, and also my 4x1.8's eventually... glad to hear you are having success with the 3x2.1's