Summerville, SC — Call or Text Us: 📞 (864) 344-7009 Get a Free Quote
DIESEL
Summerville, SC — Diesel Specialists

CUMMINS.
POWERSTROKE.
DURAMAX.

Performance builds, expert repair, and custom ECM tuning for light-duty diesel trucks. We speak diesel — because we drive diesel.

Dodge Ram / Cummins Ford / Powerstroke Chevy·GMC / Duramax
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5+
Years Experience
30+
Builds Completed
5.0★
Facebook Rating
3
Diesel Platforms

Get a Free Quote

Tell us about your truck and what you need. We'll get back to you same day.

⚡
Same-Day Diagnostics
Get answers fast
🏆
4.7★ on Google
10+ verified reviews
📍
Summerville, SC
Local firefighter owned & operated
🛡️
Parts Warranty
12-month / 12,000-mile
What We Do

DIESEL SERVICES

From a CEL that won't go away to a full competition build, we handle everything your diesel needs — mobile service in Summerville.

01

Repair & Diagnostics

Your truck is down and you need answers. We run advanced DTC scans and physical inspections to find the real problem — not just clear codes.

  • Full DTC scan & live data analysis
  • EGR / DPF / DEF system repair
  • Injector testing & replacement
  • Fuel system diagnosis (CP3, CP4)
  • Cooling system & head gasket repair
  • Transmission service & repair
Book a Diagnostic →
02

Performance Upgrades

Want more horsepower, better towing, or both? We build performance packages from bolt-on basics to full competition builds.

  • Exhaust upgrades (DPF-back, turbo-back)
  • Cold air intakes & airflow kits
  • Turbo upgrades & compound setups
  • Intercooler & charge pipe kits
  • Lift pump & fuel system upgrades
  • Complete Stage 1–3 build packages
Request a Build Quote →
03

ECM Tuning & Flash

A proper tune unlocks what your engine is already capable of. We custom-tune on the dyno for your specific mods and use case.

  • EFI Live, HP Tuners & EZ Lynk support
  • Custom dyno-verified tunes
  • Street, tow & competition maps
  • Transmission tuning (Allison, 68RFE)
  • Power & economy presets
  • Remote tune support available
Book Tuning Session →
Your Platform

FIND YOUR TRUCK

We specialize exclusively in light-duty diesel trucks. Select your platform to see the services, common issues, and upgrades specific to your engine.

CUMMINS
Dodge / Ram 2500 · 3500

The 5.9 and 6.7 Cummins inline-six is one of the most tunable and durable diesel platforms on the market. From ISB swaps to big-single turbo builds, we know Cummins inside out.

Engines5.9L · 6.7L ISB
Years1989–Present
TransG56 · 68RFE · Aisin
Common Issues We Fix
Grid Heater Nut Fix EGR Cooler 68RFE Slipping Lift Pump Head Studs
Get Cummins Quote →
POWER-
STROKE
Ford F-250 · F-350 · F-450

From the legendary 7.3 to the modern 6.7, Ford Powerstroke trucks are workhorses built for serious load. We handle every generation with the experience they deserve.

Engines7.3L · 6.0L · 6.4L · 6.7L
Years1994–Present
Trans4R100 · 5R110 · 6R140
Common Issues We Fix
CP4 to DCR Conversion 6.0 HPOP Leaks 7.3 No Starts Oil Cooler Valvebody Replacements
Get Powerstroke Quote →
DURA-
MAX
Chevrolet / GMC 2500 · 3500

The Duramax V8 is a favorite of performance builders and towing enthusiasts. From LB7 injector issues to L5P custom tunes, we've worked every generation of Duramax.

EnginesLB7 thru L5P
Years2001–Present
TransAllison 1000 · 10L1000
Common Issues We Fix
LB7 Injectors LLY Overheating LMM DPF Allison Tuning Water Pump
Get Duramax Quote →
Performance Parts

THE SHOP

We stock and install the best brands in diesel performance. Every part we sell is something we've run on our own trucks or seen proven in the field — no filler inventory.

Buy a part and add installation in one step. We'll schedule your drop-off and have it done right.

Shop & Schedule Install
💨
Exhaust Systems
DPF-back, turbo-back, and downpipes. MBRP, Diamond Eye, AFE.
🌬️
Cold Air Intakes
Improved airflow, better throttle response. aFe, S&B, Banks.
🌀
Turbos
Drop-in upgrades to compound setups. Fleece, BorgWarner, VS Racing.
❄️
Intercoolers
Upgrade your charge cooler for consistent power. Mishimoto, AFE.
⛽
Lift Pumps
Protect your CP3/CP4. FASS, Airdog, OEM.
📡
Tuners & Monitors
EFI Live, Smarty, SCT X4, Edge Insight gauges.

Stage Build Packages

Best value — parts + labor, tuned on dyno
S1
Stage 1 — Street Power
  • Intake upgrade
  • DPF-back exhaust
  • Entry tune (street map)
  • +50–80 HP est.
Get S1 Quote →
S2
Stage 2 — Tow & Go
  • All Stage 1 items
  • Upgraded intercooler
  • Lift pump kit
  • Tow + street tune maps
  • +120–160 HP est.
Get S2 Quote →
S3
Stage 3 — Full Send
  • All Stage 2 items
  • Turbo upgrade (single or compound)
  • Injector upgrade
  • Full custom dyno tune
  • +200–350+ HP est.
Get S3 Quote →
ECM & Dyno

CUSTOM TUNING

A proper diesel tune isn't just about more smoke and power. It's about making every system work together — fueling, boost, timing, and transmission — optimized for how you actually use your truck.

Platforms We Tune

EFI LiveCummins & Duramax
HP TunersAll Platforms
EZ Lynk / SOTFAll Platforms switch-on-the-fly
SmartyCummins inline flash
SCT X4 / BDXFord Powerstroke
Edge ProductsAll platforms
Tune Types Available
🛣️ Daily Driver
🚛 Heavy Tow
🏁 Competition
💰 Economy / MPG
🔀 SOTF Multi-map
📡 Remote Tune

Tuning FAQ

Straight answers to the questions we hear every day.

Will a tune void my warranty?
If your truck is still under manufacturer warranty, a tune can potentially affect warranty coverage on powertrain components. We can walk you through the Magnuson-Moss Warranty Act and what it means for your situation before you commit.
How long does a tune take?
A standard flash tune (pre-made map) typically takes 1–2 hours. A full custom dyno tune with multiple maps and data logging usually takes a full day. We'll give you a specific estimate based on your truck and goals.
Do I need mods before tuning?
Not necessarily. A stock tune on a stock truck still yields noticeable improvements in throttle response and power delivery. However, if you have exhaust and intake mods, a supporting tune is essential — running mods without a tune leaves power on the table and can cause issues.
Can you tune my truck remotely?
Yes, for select platforms. Remote tuning requires compatible hardware (like an EFI Live AutoCal or HP Tuners device). You log data on your end, send it to us, and we push the revised tune back to you. Contact us to find out if your truck qualifies.
What HP gains can I expect?
On a stock truck, a good tune typically adds 40–80 HP and 80–120 lb-ft of torque depending on the platform. Combined with exhaust, intake, and other supporting mods in a Stage build, gains of 150–350+ HP are achievable on the right platforms.
What Customers Say

REAL REVIEWS

★★★★★

"This dude is a real mechanic, Matt has changed two transmissions in my dump trucks for my company. Not only that he also has fixed multiple issues in all other company vehicles we have. Like a real mechanic he is great a diagnosing the problem and unlike other mechanics he won’t cheat you out of useless money. The communication level is better than anyone else we have dealt with. He has fixed other problems from previously used subpar mechanics. We won’t use anyone else he is better then a mechanic he is a “mechanic whisperer”"

CB
Chris Becker
2002 Ford F-350 7.3 Powerstroke
★★★★★

"Matt is a professional and works harder than many. He is a First Responder and a mechanic, working endless shifts to keep us all going and protected. Businesses cost to run, and his prices are on par considering that. I appreciate his skilled time and labor so have no problem providing the requested amount for services. He works as quickly as possible to get things right and ready for the road. Thank you for always being there!"

MR
Mae
★★★★★

"Blue Collar Diesel has been wonderful to work with. Matt is very skilled, prompt and great communication. Highly recommend!"

AB
Am MB.
★★★★★

"First off Matt has excellent communication, I asked “A LOT “ of questions and Matt answered everyone with the details i needed to make decisions for my truck. The truck went on a diet & was fed some AMPD tunes !!! A S&B CAI was a perfect match ! Truck has great response and amazing sound and I could not be happier !!! Thank you Matt !!!"

CP
Christian
2022 Ford F-250 6.7 Powerstroke
★★★★★

"Great experience working with Matt. He’s honest, takes the time to answer questions, and explains everything in a way that’s easy to understand. I never felt rushed or pushed into anything unnecessary. Matt is very reliable, kept me updated, communicated well, and finished everything on time. Hard to find someone this trustworthy. Highly recommend."

MJ
Matt J.
★★★★★

"Matt was very professional he responded to text quickly and answered all my questions patiently and he did awesome work on my 2018 ram 3500 he did a turbo swap for me because my old one was bad and i must say he did it fast also the truck is running like a champ!"

AH
Antwan Haley
★★★★★

"Matt is a true professional. Communicates very well and will do the digging to find the root cause of the issue and how to fix it. 10/10 recommend. Very knowledgeable. Wouldn’t use anyone else."

DM
Dylan May, Shorecut Lawn Service
★★★★★
5.0 / 5.0 on Facebook
Based on 10+ reviews and counting!
Leave Us a Review →
Who We Are

ABOUT THE SHOP

Blue Collar Diesel was founded by diesel enthusiasts who got tired of taking their trucks to shops that treated them like generic vehicles. We know the difference between a 5.9 and a 6.7. We know what an Allison does under load. We own these trucks ourselves.

Based in Summerville, SC, we serve the greater Charleston area and the entire Lowcountry. Our customers are farmers, contractors, tradesmen, weekend warriors, and competitive diesel pullers — and we build for all of them.

Run VSE Dealer
ASAP Calibrations Dealer
Hot Shot Specialties Dealer
FASS Authorized Dealer
aFe Power Dealer
BBB Accredited

Meet the Team

Matt
Matt
Owner / Operator

Enthusiast, Service Advisor, Technician, Owner

Diesel Resources

FROM THE SHOP

Real advice from diesel technicians. No clickbait, no generic content — just practical knowledge for truck owners.

Cummins
Best Mods for Your 6.7 Cummins Under $2,000

The highest bang-for-buck upgrades for the Ram 2500/3500 — intake, exhaust, lift pump, and tune, prioritized for your budget.

🏎️
Duramax
How to Get More Towing Capacity from Your Duramax

Transmission tuning, cooler upgrades, and fueling improvements that make the Allison work harder without shortening its life.

⚠️
Powerstroke
6.0 Powerstroke: What to Expect and How to Bulletproof It

The 6.0 has a reputation — most of it earned. Here's exactly what fails, why it fails, and what a proper bulletproof job actually includes.

Get In Touch

BOOK YOUR VISIT

📞
Phone / Text
(864) 344-7009
✉️
📍
Address
Cane Bay Blvd
Summerville, SC 29485
🕐
Shop Hours
Mon–Fri8:00 AM – 5:30 PM


Saturday9:00 AM – 2:00 PM


SundayClosed
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Send Us a Message

We respond to all messages within a few hours during shop hours.