J & J Speed Shop

08/29/2026

08/14/2026

Return of the J & J signature “LowBoost pump gas Magic” calibration

07/25/2026

A few drift Mustangs we tune ripping it up at Lake Erie Speedway this weekend. Jay Hassan & Scott Segool your cars are looking great & hope you have a great weekend

06/04/2026

Great data = great calibration

06/03/2026

2019 Mustang GT with VMP Loki……any guesses on rear wheel horsepower & torque?

05/14/2026

We have been very happy 😃 & recommend this company to our customers. Their data is great for calibrations where the injectors are unknown

05/12/2026

Attention Mopar enthusiasts! 🔥

J & J Speed Shop now offers full in-house GPEC2A ECM unlocks — meaning your ECU never has to leave the shop. No waiting days (or weeks) for a mail-in service. We do it all right here, same day.

Here's what sets us apart:

🔹 GPEC2A unlocks performed in-house — fastest turnaround around
🔹 HPTuners MPVI4 cables available for remote tuning sessions
🔹 Smart Access Cables on hand for 2018+ Mopar platforms
🔹 Proudly the only local shop capable of same-day tuning on 2015+ Mopar vehicles

Whether you're building a street car, a track car, or just want to wake up your Hemi — we've got the tools, the cables, and the knowledge to get it done without the wait.

Reach out today to book your appointment. Your Mopar deserves the best. 🤙

05/08/2026

Have to give credit to Semens/Continental on the GPEC engine controllers. Vehicle was driven to the shop & only had 1 check engine light for an oxygen heater circuit. Likely the capacitor that feel off the circuit board

04/25/2026

Tuning results for a 2024 Mustang S650 10 spd. Sadly the car had a full tank of 87 octane fuel, but gains were still good with the JLT intake & custom calibration.