i've had the same problem with the KRT CR, but now is better, you need adjust torque at "000"rpm, maybe you can find a decent torque from internet?You can check the "before/after" pics on the topicof the KRT.It appears some engines could be use in this category : Nissan V6, BMW M3, Porsche flat-6... For example : Nissan 350Z engine : 358nm at 4800 rpm.