Miller Mountain High Performance

Miller Mountain High Performance HIGH PERFORMANCE MODIFICATIONS
Dyno Testing & Tuning
PA State Insp & Emissions
General Repairs

Dyno Leader Board Update:Tom M and his 2009 G8 moves up the Naturally Aspirated side from 11th to 5th now making 481whp....
05/09/2026

Dyno Leader Board Update:
Tom M and his 2009 G8 moves up the Naturally Aspirated side from 11th to 5th now making 481whp.

Dyno Leader Board Update:Glen K and his big block 96 Impala SS moves up from 14th to 8th on the Naturally Aspirated side...
05/01/2026

Dyno Leader Board Update:
Glen K and his big block 96 Impala SS moves up from 14th to 8th on the Naturally Aspirated side!

04/11/2026

Logan's Caprice, full weight, AC and all makes its best pass yet!
10.095 at 144.80mph!
No trailer. Drove it to the track and drove it home.

03/27/2026

Logan's full weight Caprice is back in action with reconfigured turbo and made it's personal best 1/4 mile pass at 10.505 @ 140.08mph. Need more fuel system.
Another world record for Miller Mountain High Performance! Anthony Lattanzi 2016 Audi c7.5 A6 stock engine bolt-ons only runs 10.791 @126.52mph in the 1/4 mile. Ported blower by Logan Miller pushes it over the mark making 3 pounds more boost from the porting work. Tuned by Jackal Motorsports


Logan's full weight Caprice is back in action with reconfigured turbo and made it's personal best 1/4 mile pass at 10.50...
03/22/2026

Logan's full weight Caprice is back in action with reconfigured turbo and made it's personal best 1/4 mile pass at 10.505 @ 140.08mph. Need more fuel system.

Another world record for Miller Mountain High Performance! Anthony Lattanzi 2016 Audi c7.5 A6 stock engine bolt-ons only...
03/22/2026

Another world record for Miller Mountain High Performance! Anthony Lattanzi 2016 Audi c7.5 A6 stock engine bolt-ons only runs 10.791 @126.52mph in the 1/4 mile. Ported blower by Logan Miller pushes it over the mark making 3 pounds more boost from the porting work. Tuned by Jackal Motorsports - Customer group

Dyno Leader Board Update:Jerry Xin with his 2010 Camaro, 6.2 LS, cam, headers, and tune lands in 12th position on the na...
03/03/2026

Dyno Leader Board Update:
Jerry Xin with his 2010 Camaro, 6.2 LS, cam, headers, and tune lands in 12th position on the naturally aspirated side with 448whp.

02/21/2026

Built 6.4 going in. Lots of goodies in it.


02/12/2026

🎉 Happy 5-Year Anniversary, Miller Mountain High Performance! 🎉

Five years ago, Miller Mountain High Performance took the wheel on High Street—and Pottstown’s car community has been stronger (and faster) ever since. From dyno tuning and testing to custom turbo installs, superchargers, drivetrain work, and full performance builds, they’ve become a go-to shop for enthusiasts who want quality and real expertise.

Beyond the shop, they’ve also helped fuel the local scene—supporting events like Pottstown Nights Car Shows and staying connected to the racing world through partnerships like Maple Grove Raceway.

If you haven’t checked them out yet, they’re located at 323 E. High Street, Pottstown. Here’s to 5 years of horsepower, community, and next-level builds—and to many more! 🏁🔥

Miller Mountain High Performance

02/12/2026

Jason H and his 300C making 715whp.

Address

323 E High Street
Pottstown, PA
19464

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

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