Late Model GM Performance

Mail Order Tuning

Dyno Tuning

Laser Cutting

Tuned Port Injection Tuning

GM Remote Tuning, Dyno Tuning & Performance Parts

PCM of NC specializes in the tuning and performance of late model LSx and LTx based vehicles, delivering great service both locally and worldwide. At our Mooresville, NC location we offer GM tuning of all types - mail order, email/remote, and dyno/street tuning, as well as parts sales and laser cutting with our 1500kw in-house laser. Our wiring harnesses are also hand-crafted in house.

On Site Tuning

Local to us in Mooresville, NC? We offer on site street and dyno tuning, depending on your application. We also offer mail order tuning in person. GM ECMs only (no Holley etc). Take advantage of our years of experience and let us handle your tuning. We get the most out of your setup, safely, with an emphasis on drivability.

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Mail Order, Email and Remote Tuning

Need tuning but don't have any good local options? We offer mail order tuning (sending ECM through mail) and also remote/email tuning (tuning with HP tuners via email) to help you finish your build correctly. We use our library of 25+ years to tune your vehicle, based on what we have developed to work best in person.

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Real Customers. Real Builds.

Anonymous

Verified owner

5/5

4 hours ago

LSx LTx Truck & SUV Remote Tuning - HP Tuners - Gen III, Gen IV Gen V Full Size Truck & SUV V8 Email Tune File

Martin Walter

Reviewer

5/5

Again awesome

16 hours ago

Hummer H3 Performance Mail Order Tune

PAVANANTHAN PONNIAH ARASAMMA

Verified owner

5/5

22 hours ago

2006-2009 Hummer H3 I5 + V8 Replacement ECM

Troy

Verified owner

5/5

Everything works great...car is more responsive and smoother.

22 hours ago

1986-1993 Chevy Corvette Mail Order Tuning

Zach

Verified owner

5/5

I ended up with a bad PCM. I sent mine in and they bench tested and determined it was bad. I was sent a new one already programmed and ready to go. I received it and installed. The truck fired right up. Not my first experience with them but they have all been great. Will definitely be using again. Thanks.

24 hours ago

Replacement E38 ECM PCM Core - VIN Programmed

Mathew

Verified owner

5/5

car starts and runs very well especially for a speed density tune ( i missed specifying a maf type in the sheet i assume they took it as no maf)

1 day ago

Mail Order Tuning – LS Swap Powered Hot Rod

LS Swap Tuning

Performance Parts

Electric Fan Kits

4l80e swap harnesses

Google Reviews

PCM of NC

4.7

Based on 261 reviews

review us on

erik O.

4 months ago

Rob L.

4 months ago

PCM Tune of NC did an amazing job tuning my 2015 GMC Sierra 1500 SLT 5.3L V8. The removed the 100mph limiter, turned off the V4/V8 flex option keeping all (8) cylinders running all the time, updated my tire size in the system to fix the shifting points greatly improving the driving experience with the larger tires, updated the system to accommodate a cold air intake I installed, and lastly worked their magic to get another 20hp out of the motor now tuned to 93 octane gas. It drives better than new with more power even with the much larger 33x12.5 tires! I'd highly recommend Kelly and the Team!

Aaron A.

4 months ago

Best in the business!

Riley R.

5 months ago

It’s been great working with these guys 10/10 recommend, very helpful

sebeans

5 months ago

I recently ordered a mail PROM chip for my 87 Corvette with aftermarket heads and headers. Mark was incredibly helpful throughout the entire process of ordering to installing the chip! On top of that, I accidentally got my broadcast code wrong and the fixed it quickly without issues after I brought it up to them! All in all the process was made easy and fast due to PCMofNC’s excellent customer service! The mail order tune also woke my car up! 5 stars from me!

tobey J.

5 months ago

I highly recommend these guys. Very friendly very patient highly knowledgeable best remote tune out there. They’ve been a pleasure to work with. Don’t waste your money and go with the best guys in the beginning

Bill

6 months ago

Recently upgraded the Cam and heads on my LS1. Reached out with questions about injector sizing before beginning the build and they were able to point me in the right direction. Sent the ECU off on a Monday and received it back on Wednesday. I'd installed a stage 4 camshaft and the car still had a little issues but they were able to assist me in getting them a data log and had a tune file that corrected the issue back to me the next day. Very approachable people that I spoke with, which is nice considering I am a novice at tuning and using HP Tuners.

Christian

7 months ago

All i gotta say is WOW! Amazing customer service! I got my 2012 colorado tuned beginning of 2026, instantly improved almost everything in the way of driving/ power Nd shifting. They walked me thru everything, their website is simple and the order sheet is easy. My speedometer was off by around 4-8 mph cause of aftermarket tire size and they had me send back everything, retuned it and got it spot on for free! Kelly is who i was talking with, kudos to you! Amazing service! Thank you for everything!

Salman K.

7 months ago

These guys are the best. They are very knowledgeable and responses are very fast, not like your traditional online tuners that needs 48 hrs or so. I reached out to 10 different online tuners for my Porsche 911 996 ls3 swap and none bothered to reach back out even though they requested an email with all the info. I reached out to PCM and in 30 mins my base tune was ready. These guys even went out of their way and gave me already flashed ECU and took mine since it required a bench flash. This is all happening on Friday and 10 min before their closing time. That tells a lot about a business and how they treat their customer. I would never go anywhere else. These guys are my go to tuners.

Late Model GM Performance

Mail Order Tuning

Dyno Tuning

Laser Cutting

Tuned Port Injection Tuning

GM Remote Tuning, Dyno Tuning & Performance Parts

On Site Tuning

Mail Order, Email and Remote Tuning

Real Customers. Real Builds.

LS Swap Tuning

Performance Parts

Electric Fan Kits

4l80e swap harnesses

Top Products

6L80e to 4LXXe Swap Conversion Harness

4l80e Swap Harness (4l60/70 to 4l80e)

1999–2002 Silverado, Sierra & Avalanche Dual Electric Fan Conversion Kit

Trailblazer/Envoy/Saab 5.3L/6.0L Spal Dual Fan Kit

VATS/Passlock Delete

HP Tuners Software MPVI4

HP Tuners LS Swap or LT Swap Remote Tuning – LS or LT Powered Hot Rod

DOD/AFM and/or VVT Delete Tune (Gen 4 & Gen 5 Non Global B ECM)

Google Reviews

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