Sleeper Race Program
Meet our Racers
David "Duffy" Duffield
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7 second S14
Built 2JZ
Sponsors:
Sleeper Tuning, Sunoco Race Fuel, Garrett Motion, IDS
Link ECU, El's Tires, Fast Fab, Brian Roche Racing Engines
Northeast Body Shop, Wilmington, DE - New Paint for 2024 - Katsura Orange
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2025 Pan American Nationals
2nd year Competing in XStreet class
Number One Qualifier 2025
ET 7.776 at 181.42mph
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2024 Import VS Domestic World Cup Finals
2nd year
2nd place Limited Street Class
Number one qualifier 2024
Runner Up 2024
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2024 Pan American Nationals
Number 1 Qualifier X-Street class
Runner up Pan American 2024
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2023 World Cup Finals
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Cecil County Dragway
Catch us testing at our home track
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Follow Duffy on Social Media
IG @duffy_davee
FB David Scott Duffield
Jorge Batiz
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800hp 1993 Nissan 240sx hatch
Sponsors:
Sleeper Tuning
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2024 RaceMotive Roll Race
Placed 1st in 150mph class
1/3 mile 159.99 mph
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Built RB25DET
Link ECU G4X
Josh Gunnet
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Billet Block Supra
Newest Member of our Race Program, Josh is no stranger to roll racing.
Finished for the 2025 race season boasting over 1700 whp on E85
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1700 HP 2JZ
Josh is getting ready to compete in his first roll race in years. Season 2025 and we’re hoping to get some good roll races in!
Running Link ECU Voodoo Pro
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Link ECU G5 Voodoo Pro
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Titanium piping done by Schmuck Built, LLC https://www.schmuckbuilt.com/
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Full build documented on our YouTube Channel
Luis Valentin
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Nissan Silvia
Luis has been with us since the beginning.
Follow Luis on IG @rhd.lou
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Link ECU
Running Link ECU G4X
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Built RB25DET
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Seat time
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Giving Back
UD Blue Hen Racing
(Sponsorship) 2025 - Current
We believe in giving back to our community. Here at Sleeper we are continuing support of the UDFASE team through 2026.
Running Link ECU G4X -FuryX
”On behalf of our entire team, I want to thank you for your tremendous support this past season. Your sponsorship played a vital role in having a successful 2026 Formula SAE competition, and allowing us to show off the team’s incredible hard work throughout the year. We are proud to say we finished all dynamic and static events for the first time since 2019, finishing in the top 70 out of nearly 150 universities. “