VelocityAP Lamborghini Huracan Exhausts - Race, Supersport & Valved

[Stuart@VelocityAP]

Lastly, some MATH!!!! We take our exhaust development pretty seriously. Our philosophy dictates that functionality and minimalism come first, so that we don't end up adding a bunch of unnecessary things which just increase cost without making a better, stronger or better sounding product.

Included in that is how to pick the low hanging performance fruit and get you the most bang for your buck. A part of that analysis often includes flow bench testing. As my friend who flows heads for a living likes to say: "Air does some weird s**t. And it doesn't always do what you think it will.

So for these 3 systems, we built a plenum to hook them up to the flowbench and analyze the results.

Some interesting data came through. The OEM exhausts are actually pretty well set up in terms of flow rate when the valves are open, but lose almost 50% flow when the valves are closed. Flow data only tells part of the picture, it doesn't give you data on low RPM or mid-range torque, or acoustical properties but it does give you a picture of your maximum flow rates.

How our exhausts stacked up versus OEM:

Race vs. OEM 'Open': +8.62%

Supersport vs. OEM 'Open': +1.03%

Valved 'Open' vs. OEM 'Open': +2.24%

Valved 'Closed' vs. OEM 'Closed': +26.10%

So the conclusion is that all our exhausts have higher flow rates than the OEM systems, with the biggest gains being the 'Race' system as expected, and Closed vs. Closed.



Now interestingly, we had a customer who wanted us to alter the design of the Valvetronic system, believing two things:

1. That the 'Y' between the two air flows was compromising 'Open' flow.
2. That the XPipe was also compromising flow.

We built a custom system, which featured a 'T' connection to the muffler inlets, and had 2 x U-Pipes rather than the XPipe. The results are shown on the Flow Bench chart as the 'Test' system.

As you can see, not only was 'Closed' Flow lower, but 'Open' flow was decreased as well! Interesting results.