Cornwell Tools Crew Chief Confidential - Circle K NHRA Four-Wide Nationals

David Grubnic, crew chief for Brittany Force, explains there are a number of pieces to the puzzle when it comes to refining a new tune-up, but he’s confident they’re headed in the right direction. Bruno Massel has more in this week’s #CrewChiefConfidential presented by Cornwell. 🎟 https://www.nhra.com/schedule/2023 🔔 Subscribe to our YouTube channel: https://www.youtube.com/c/Nhra1951 🌐 Visit NHRA.TV to access more content: https://www.nhra.tv/ 📲 And Follow us on all our social networks: Facebook: https://www.facebook.com/NHRA Twitter: @NHRA: https://twitter.com/NHRA Instagram: @NHRA: http://instagram.com/nhra TikTok: @NHRA: https://www.tiktok.com/@nhra