
Boost Your Ride with Expert Tuning: My Experience with Shaun Perry at AED
Now that my Coyote is firing on all 8 cylinders, I decided to optimize its performance by visiting a top-tier local tuner, Shaun Perry, at AED in Cameron Park, CA. Located just 12 miles from my home, Shaun’s shop is a go-to destination for car enthusiasts. Known as a trusted expert in the Coyote tuning community, He quickly diagnosed my injector issue with precision. I scheduled a Friday afternoon appointment, and his exceptional service didn’t disappoint—Shaun truly delivers!
Unleashing Power with the SCT X4 7015P Tuner
To take my Coyote to the next level, I invested in an SCT tuner for Shaun to store custom tunes. After researching options, I chose the SCT X4 7015P—an unlocked tuner essential for personalized tuning. Finding an unlocked tuner in California can be tricky due to strict smog regulations, but I navigated the challenge effortlessly. Since my car is registered as a 1965 model, it only requires a closed PCV system for emissions compliance. This allowed me to simplify the purchase by informing the retailer it was for a 1965 vehicle—problem solved!
Ready to enhance your car’s performance? Discover why Shaun Perry at AED and the SCT X4 7015P are the ultimate combo for Coyote owners in Cameron Park, CA!
Maximize Performance with Dyno Tuning: My Session with Shaun Perry
Shaun, a renowned Coyote tuning expert, ran the car multiple times to fine-tune its performance. During the session, he detected false-knock readings—a common issue that can skew results. After some investigation, he pinpointed the culprit: loose exhaust bolts causing a rattling “false knock.” With a quick fix, Shaun recalibrated and reran the dyno, but the power output still fell short of expectations. Here’s what we uncovered.
Diagnosing Power Loss: Catalytic Converters and Sidepipes
Digging deeper, we identified two key factors holding back the Coyote’s performance. First, the catalytic converters—unnecessary for this build—were emitting a foul odor, likely damaged from a past Jet-Hot coating process. Second, the GASN Touring sidepipes, while delivering an awesome roar, were choking the exhaust flow. Their internal chambered muffler, measuring just 1.5-2 inches, paled in comparison to a wide-open 4-5-inch side pipe. These restrictions were silently sapping horsepower.
The Fix: Upgraded Headers and Gutted Converters
I’d suspected the solution for a while, and the dyno confirmed it. The upgraded headers, originally equipped with catalytic converters, had been compromised long ago and were gutted to restore flow. Shaun’s expertise brought clarity to the process, setting the stage for the next round of runs on the dyno!


Unleashing Horsepower: Removing Side Pipes and Cats for a Power Boost
We unbolted the restrictive GASN Touring sidepipes and removed the unnecessary catalytic converters. And after vacuuming out the system, we had it primed and ready to roar. Time to get back on the dyno, the results spoke for themselves. There were no more false knock readings, and a 17HP at the wheels gain! The final tally? An impressive 413HP, naturally aspirated, to the wheels! Check out the video below to see the action.
Dyno Time!

Overall, I’m very happy to break the 400HP club! This will be way too much power anyways :) I took the go-cart for a little spin in the biz park before reloading onto the trailer. Success feels awesome!!