Miller Mountain High Performance (Performance Specialties)

For years I struggled with my 340 HP motor stalling out when hot and swapped many parts (Intakes, 3 different edlebrock carbs etc) . Art and team figured out the issue and fixed it. It has never stalled since. Also setup on Dyno helped as well. They did me right. My 1972 340 Duster is so much fun to drive now.

Art, Logan and the rest of the team are great to work with. They had multiple conversations with me to learn more about what I wanted to do with my car and the goals I have short and long term. From there, we built out a parts list and discussed time line. The time line went a bit longer than expected due to finding miscellaneous repair items we needed to take care of before we got to the fun part of adding horsepower. They texted and spoke with me about every little detail. They even shared video and images of the items that needed addressing/replacing. We talked about additional prices for parts and the additional labor needed. All of this communication helped with not being surprised with a bill I was not expecting. My goal was simple - add more horsepower, responsibly. Art and Logan ensured we did it the right way and did not cut corners. They provided advice and guidance that helped put me at ease with how we should move forward when curve balls presented themselves. I have recommended two of my buddy's to them so far. I would not do that if I did not trust Art and Logan having the best interest of their clients at heart. On more of a personal note, they are fun guys who worked hard to make me happy. Every time I shift, I have a huge smile on my face. They did a bang up job and delivered on what was agreed upon.

Super happy with the work that got done to my car! I have a 2014 Golf, I have taken it to Miller Mountain for a bunch of work over the past few months and what they have done is amazing! I got a new manifold and intake system, stage 2 tune, suspension upgrade and an exhaust system! My car rides so nice I’m so happy and excited to drive my car every time I get in! The quality of work they do and the knowledge they have is incredible! Art, Logan and everyone that works there are nice, friendly, respectful and you can tell they care about what they do and have the passion for what they do and I love that. Will always take my cars here!

I couldn’t be more pleased with my experience at Miller Mountain High Performance. From start to finish, the entire team delivered outstanding service, communication, and professionalism. Everyone I interacted with—from the owner to the rest of the staff—was friendly, knowledgeable, and genuinely committed to making sure I was completely satisfied. The owner took the time to guide me through choosing the perfect exhaust for my truck, offering expert advice that made the decision easy and stress-free. His experience and insight really stood out and gave me confidence that I was making the right choice. I went with the Flowmaster American Thunder Cat-back dual exhaust system, and I couldn’t be happier. The look is sharp and clean, and the sound is exactly what I was hoping for—a classic, old-school low rumble with a moderately aggressive tone that definitely turns heads, but in all the right ways. If you’re considering any high-quality performance work on your truck, I highly recommend Miller Mountain High Performance. They truly go above and beyond. Check them out—you won’t be disappointed! Thanks again to everyone there for an awesome experience!

After a botched job from an arrogant “hot rod shop” in Coatesville, I finally found these guys. Let me tell you, they are the REAL DEAL. I would’ve save myself so much pain money if I had gone Miller Mountain High Performance first! They do amazing work and are extremely communicative, which helps when you are like me and keep track of every detail when it comes to your vehicle. After dealing with them for a few months- I can safely say I would trust them with any high-end project you have without hesitation. Bottom line- I’m extremely satisfied with their work and VERY competitive pricing!