The JWT ECU is good for a basic program. The car still drives fine and all but you can't expect to get the maximum horsepower, reliabilty and most importantly the driveability that a stand alone can offer. Even as is, I know the car will make at least 600rwhp because it pulls VERY hard however, it is still running 10.0 up top and that is robbing me of power. The good thing about a stand alone is you can adjust throught out all the RPM range. Not only 12 adjustments like the fuel controllers on the market. If we want to compete with the single Supras, the JWT ecu won't do it.