Port Matching a Nitro engine header manifold HPI RS4 3 exhaust mod Part 1 intro and top speed test

3 part series where we take a stock HPI rs4 3 evo, test for top speed(part one) then I do an at- home port matching with the Dremel(part two) then I test for top speed improvement(part three)

[@jasonbrawley3925]

Hit the thumbs up before the video even starts. Good job Todd

[@samsonight2721]

U got my thumbs up every video

[@samsonight2721]

It's also pretty much every hpi small block side exhaust header that needs this done

[@bowi73]

rs4 always good soundlike it stuck in second gear

[@RickysRcChannel]

Subscribed pal, yep defo hard to get the watch hours up on yt, I'm struggling to lol

[@xtm-ps5td]

nice

[@lawrencewinter]

is it shifting ok? Not sure I could pick it. But 46mph probably second gear

[@NitroTalkwithTodd]

It is, I couldn't really hear it either, but if you roll on the throttle you can. It shifts a bit early