1460 Danielsville Rd, Suite B, Athens, GA Mon–Fri 9am–5pm Authorized FASS & BD Diesel Dealer

Diesel Specialists

EGR & DPF Service & Cleaning

Clogged EGR and DPF systems cause derates, poor MPG, and rough running. We service and repair them the legal way — and offer FASS EGR Solutions filtration.

Signs you may need egr & dpf service

Derate, limp mode, or a speed-limited countdown
Frequent failed regens or constant regen cycles
Poor fuel mileage and sluggish power
DEF, NOx, or DPF-related trouble codes
Rough running, soot smell, or excess smoke

Clogged EGR and DPF systems cause derates, poor MPG, and rough running, and they tend to fail at the worst possible time. We service and repair them the legal way, and we offer FASS EGR Solutions filtration to help keep the system cleaner. To be clear: we do honest service, cleaning, diagnosis, and repair. We do not do deletes or any emissions tampering, period.

Why these systems clog, and what we actually do

EGR routes exhaust back through the intake, which over time cakes the valve and cooler with soot. The DPF traps particulate and burns it off during a regen. When regens fail, soot loads up, the truck derates, and you're stuck on the shoulder. We diagnose why, then clean, repair, or replace the EGR valve, cooler, DPF, sensors, and DEF components as needed on Duramax, Cummins, and Power Stroke.

Failed regens and DEF faults

A truck that won't complete a regen or throws DEF and NOx codes will eventually limp. We find the real cause, whether it's a plugged DPF, a bad sensor, a DEF-quality or dosing problem, or an EGR fault, and we fix it so the system can do its job again instead of fighting you every drive.

FASS EGR Solutions, kept street-legal

As a FASS dealer, we offer FASS EGR Solutions filtration that helps cut the soot fouling your EGR system, all while keeping every piece of emissions equipment in place and your truck street-legal. It's a legal way to run cleaner and reduce buildup, not a workaround. If another shop offered to delete your emissions, understand that's illegal and we won't touch it. We fix it right, we keep you compliant, and we keep you on the road.

EGR & DPF Service — common questions

Do you do EGR or DPF deletes?

No. Deletes and emissions tampering are illegal, and we don't do them. What we do is legal service, cleaning, diagnosis, and repair, plus FASS EGR Solutions filtration that keeps your truck street-legal.

My truck keeps going into regen or derating. Why?

Usually a clogged DPF, a failing sensor, an EGR problem, or a DEF fault. We diagnose the exact cause and repair it the legal way so the system regenerates properly instead of loading up and limping.

Can cleaning fix it, or do I need new parts?

It depends on how far gone it is. Sometimes a thorough EGR or DPF cleaning restores function. Sometimes a part is too clogged or failed and needs replacing. We test first, then tell you honestly which it is.

Athens, GA & Northeast Georgia

Need egr & dpf service? Let's get it fixed.

Call or text Appalachian Auto & Diesel and describe what's going on. Honest diagnosis, fair pricing, and repairs done right the first time.

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