Quote:
Originally Posted by Kodename47
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 
@ 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. |
This. Like I mentioned above, a 4-2-1 header will give bigger bumps in low end power at the cost of some up top. If you went with a header designed for the biggest power above ~5k rpm you would see it breathing better up top but losing a bunch down low. It also needs different cams to keep continue making more power beyond ~6.5k rpm, which would also cost some low down power.