Johnson Customs ECM TUNING
Incomplete listing
auto-repair
Serving Sioux City, IA
Location: Sioux City, IA 51106
From Google Business Profile
4.8
72 Google reviews
Hours
| Monday | 10 AM–10 PM |
| Tuesday | 10 AM–10 PM |
| Wednesday | 10 AM–10 PM |
| Thursday | 10 AM–10 PM |
| Friday | 10 AM–10 PM |
| Saturday | 10 AM–10 PM |
| Sunday | 10 AM–10 PM |
Google categories: Auto repair shop
View on Google Maps →Last checked October 9, 2026.
More from Google Business Profile
Listed features
- Accessibility
- Wheelchair accessible entrance
- Wheelchair accessible parking lot
Photos on Google: 25
Recent Google reviews (excerpts)
Written by Google users, not by EdgeLocal. EdgeLocal has not verified them and does not show reviewer names.
5 out of 5 stars · Jul 2026
I had to get a tune done for my mustang, got there, dude was ready to go and got done within 10-15mins. Very friendly and engaging person. Definitely recommend coming to this tuner for any vehicle you need done.
5 out of 5 stars · Jul 2026
He was quick and efficient. Got everything done fast and helped when asked questions about what was being used. Will definitely recommend to others
5 out of 5 stars · Apr 2026
Drew is Awesome! Helps me out a lot. Always quick response time and quick turn around with Quality! Highly recommend for all auto computer repair and tuning!
The owner replied to 0 of the 5 most recent reviews Google showed.
From Google Business Profile, last checked October 9, 2026.