Quote:
Originally Posted by TOTO_86
In my opinion, the reason for the torque dip is because the computer is on the motor. I've heard from a Toyota technician that when a car has it's computer on the engine it can cause problems. He suggest to buy a heat shield for it. This is the first time I've read that headers are helping the problem out.
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Right, so having the ECU exposed to heat means it doesn't work correctly for 1k RPM of the rev range!? Its nothing to do with that
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Xdragonxb0i the reason it starts to lose power after 6.5k is that's where the limitations of the cams are. It was also posted earlier that header design places peak torque around a set area, which in Nameless' case is where I the original dip is (its quite obvious). You could design a header for more top end grunt but I doubt that it would improve on the lower dip.