I have a CB-60 and want a little more power, what's some simple mods?

First, Tee off the boost line on the carby hat and connect a tube to the secondary actuator. You can also remove the secondary spring if you want but it will use more fuel. This will stop the 'flat spot' experienced before the secondaries open. Then, go to a Motorcross shop and buy a Unifilter for a bike. Fit this straight on the end of the turbo. Ditch the factory filter. - Cost: About $20 - $25

Second, remove the factory boost controller on the carby "hat" and buy a second hand Blow off valve off an RX7, Supra etc. (Denso) and fit it in this location. Cost - About $25 - $50

Third, If budget permits, buy a second hand intercooler off a Supra or MR2. Fit it in front of the radiator. Turn the Compressor housing on the turbo 90 degrees to reduce the pipe length. - Cost: About $150 for the intercooler and about $30 for some tube and bits of radiator hose.

Fourth, Up the Boost!! Use a bleed valve or piece of tube with some small holes drilled in it in the wastegate boost line. You really need a boost gauge to test this. Run between 10 and 15 psi and it should last a while. It might pay to increase the secondary jet at this time. Go to the wreckers and get a secondary jet off a 1.3 Corolla. These are the same carby but have larger secondaries. - Cost: About $60 for a bleed valve or $1 for a piece of tube with holes drilled in it.

These mods are exactly what I have done to my car. performance increase is amazing. The biggest improvement was from fitting the Unifilter and the secondary carby mods (apart from increasing the boost!) Should drop quarter mile times into the fifteen's. Fast enough to scare lots of bigger engined cars.