HPI Savage X with F5.9 engine and Robin's Custom pipe run test

Some unedited video of a run test in my HPI Savage X. The Savage have a F5.9 engine (with proper brake-in) not perfectly tuned, and a Custom Pipe from extremercmods.com (aka Robin's Pipes). Thanks! I accept suggestions in engine tune and other things you discover after see this video. #HPI #SAVAGEX #F.9 #EXTREMERCMODS #CUSTOMPIPE #NITROGANG