Headers were upgraded over the winter. Eurocharged installed the tune and the before and after dyno runs. Below are some clips. All pulls were performed on a Dynojet. Baseline - 434whp 321wtq Power run- 464whp 334wtq Baseline: https://www.youtube.com/watch?v=YEfzcvB1K4E Power run: https://www.youtube.com/watch?v=jtKptuvZDQ8 Image Unavailable, Please Login Image Unavailable, Please Login
Running 93/94 is best but not necessary. The tune 'adapts' with the type of gas you add. I had old 91 gas for this run. I expect a higher yield as the ECU adapts and higher octane gas is used.
Something is wrong - there's no way torque can be greater than hp at 5600 (formula to convert measured torque to hp is hp = torque x RPM /5252). The power dip in the mid 5000 rpm range to below the torque values doesn't compute.
Nothing wrong at all. This is an inherent result of aftermarket headers on this motor. There are various F430 dyno threads that show similar dips. I suspect that it could be the collector going from 4 to 1. In real world driving, there is no perceived dip in power or torque. It pushes violently all the way to redline. What a difference. A few examples: Image Unavailable, Please Login Image Unavailable, Please Login
Thanks...I'm very happy with the result and it endorses the fact that these motors are conservative due to some restrictions.
Yes it did change. To sum up: - Start up is a louder, throatier bark. Loud idle until warm. - Warm idle, slightly higher pitch. Almost stock. - Take off from Race mode, stock until the valves open up. - Valves open, extremely noticeable! Very loud pitch, much throatier and symphonic, shifting gears gives a back fire sound. - Sounds like the mid 90's F1 cars gearing up/down.
In both pulls, crossover is at 5252 and torque is lower than HP at 5600 as well. Not sure what you're looking at. Nice results!
