Quote:
Originally Posted by Emily Hux
That dyno graph has the typical fluctuations on the topend from the flapper door opening on the ct20b that we incountered. We are now in the process of making an upgraded actuator since HKS does not offer this for the ct20b turbo. For some reason my green mr2 has a stiffer factory actuator than the other genIII ct20bs we dynoed for comparison in the shop. That accounts for my car being able to run more boost/hp before this would occur.
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You can also see that what should be a torque "curve" looks more like an inverted torque "V" (or rather "/\"). The torque rises to its peak and then does not follow what I would think the VE curve of the engine should look like. Another sign that boost spiked and then the door blew open.
Along with making more HP than torque by a long shot. The relative numbers that Sang posted (much higher torque) remind me of a CT26 equipped car where boost at peak torque is much higher (like 15-16psi), and boost at peak power is more like 12psi as it is falling faster (obviously a different reason for the CT26, but just an example of torque falling fast because of boost drop off).