D. Ryals Performance

D. Ryals Performance Donny Ryals is seasoned tuner. Over 40 years racing and shop owner. Certified GM Service Manager. LS Horsepower Consultant and Camshaft sales.

Off the shelf or Custom Ground

05/14/2026

She's got about 380K miles on her now. Tune only. Run Draggy 14.88 1/4 mile.

"Speeding em up since 1976"

It doesn't have to be a Late Model! 2 tough ones this week. There is a difference in writing a Tune and a Tuner. These ...
05/14/2026

It doesn't have to be a Late Model! 2 tough ones this week.

There is a difference in writing a Tune and a Tuner. These 2 need a Tuner.

A Tuner devotes every day, all day to his craft and has written thousands of Tunes. It's how he makes a living. It's not part time work.

My point is these 2 trucks. Neither uses HP Tuners. The Jeep is a Holley Sniper/MSD conversion Small Block Chevy Swap with big Cam and headers. Super Duper nice CJ7 build. Yes I Tune Holleys.

The other is an Aces Fuel Injection conversion with a Module controlling the shifting of the 4L60E. in a 91 Chevy step side.

That guy has spent thousands upon thousands and it's not drivable.

Tuning is about Air Flow/ Fuel mixtures whether it's electronic or a carb that pulls its fuel through circuits and boosters.

It's all Tuning and Data Logging with HP, Top Don, OTC, Snap On, Draggy and Top Scan, and I can Flash New PCMs with GM or Ford OEM Software.

I will be able to program New Remotes and Keys in the upcoming weeks.

I am accepting Race Car wiring and consulting using CAN BUS to communicate with modules and the Crew Chief can stand at the line and read live data and even kill the engine if he notices a problem.

I'm offering a no theft setup if you don't want hackers to steal your Hellcat or similar vehicle electronically.

I can scan your car to hunt down GPS Trackers for those with a jealous spouse! Have found a few Yes!

DRyals
"Speeding em up since 1976"
662 614 1547

Address

23460 Highway 8 East
Grenada, MS
38901

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