Scott is right,, turn up the boost! From your post you have the performance parts to safely turn up the wick. A good street chip calibrated for your injectors should allow you to run 17lbs ~ safely on 93 Octane. If you wish to experience higher boost levels, higher octane will be required...UNLESS you install a Alky systems setup. This performance item will allow you to run at least 20-21lbs of boost on 93 octane--Best thing since slice bread. I suggest turning boost levels up in increments of 1-2lbs at a time--allows you to verify you have correct fuel pressure. This is were my next topic would be directed to... To drive your TR safely, a
scanning tool is not only smart, but a great insurance product to SAFELY monitor vital sensors, e.g., .02 volts, BLM#s, TPS etc. , not too mention saving a head gasket from blowing....Have fun.
