Spelab NEWs
Get the latest SPELAB product releases, engineering updates, testing insights, industry trends, and company announcements for performance-focused automotive enthusiasts.
Is a Muffler Delete Illegal? What You Need to Know Before You Modify
Discover muffler delete legality, performance effects, and street-legal alternatives for aggressive exhaust sound. Includes Cat-Back, Axle-Back, and electronic valve options.
How to Find an Exhaust Leak Safely: Tests, Symptoms and Repairs
Updated on August 03, 2026. To find an exhaust leak safely, start with the engine cold and the truck parked outdoors. Look for soot, cracked tubing, loose joints, broken studs,...
What Is DEF in a Diesel Truck? Use, Storage, Warnings and Faults
Updated on August 03, 2026. DEF, or Diesel Exhaust Fluid, is a separate fluid used by a diesel truck's Selective Catalytic Reduction system to reduce nitrogen-oxide emissions. It does not...
6.7 Cummins Grid Heater Delete Pros and Cons (Failure Risk, P2609 & Cold Start Guide)
Deleting the 6.7 Cummins grid heater improves airflow and reduces failure risk but may cause cold starts and codes. Here’s what owners need to know.
How Much Horsepower Does a SPELAB Intake System Upgrade Kit Add
1. Introduction: The key role of the intake system in the 6.7L Cummins diesel engine The intake system plays a pivotal role in maximizing diesel engine performance. In heavy-duty trucks...
Valve Cover Gasket vs. Head Gasket: How to Tell the Difference
Updated on August 21, 2026. TL;DR: Mistaking a leaking valve cover for a blown head gasket is a costly error. Head gaskets cause white smoke and coolant loss; valve covers...
Top 5 Aftermarket Differential Covers in 2026: The Ultimate Guide
Compare the top 5 differential covers of 2026. From SPELAB’s value to Banks’ cooling, find the perfect upgrade to prevent overheating and extend gear life for your truck.
What to Do When Your DPF Is Clogged? Best Maintenance & Solutions
Updated on June 30, 2026. If your DPF is clogged, do not jump straight to cleaner, replacement, or a race-use delete pipe. Check the warning level first, then confirm soot...
Dodge Ram 5.9L Diesel Grid Heater: Symptoms, Delete & Intake Upgrade Guide
This guide explains Dodge Ram 5.9L diesel grid heater failures, symptoms, OBD-II codes, and offers intake upgrade solutions for improved reliability and engine performance.
EGR System VS EGR Delete? What will change?
Updated on August 03, 2026. Originally published on April 11, 2025. An EGR system routes a controlled amount of exhaust back into a diesel engine to lower peak combustion temperature...
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