Spelab NEWs
Get the latest SPELAB product releases, engineering updates, testing insights, industry trends, and company announcements for performance-focused automotive enthusiasts.
How To Fix Exhaust Leak
A practical guide to diagnosing and fixing exhaust leaks on diesel trucks, including symptoms, repair steps, costs, and how diesel DPF delete systems change exhaust flow and performance.
What Is a Turbo Back Exhaust? Turbo Back vs Cat Back, DPF-Back & Delete Pipe
A practical diesel truck guide explaining turbo back exhaust systems, delete pipe differences, tuning needs, fitment checks, pipe size choices, sound changes, and legal-use warnings.
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,...
DEF Fluid & DEF Delete Guide: Solving Limp Mode for Cummins, Duramax, and Powerstroke (2026)
Updated on July 7, 2026. Quick Answer: DEF Fluid, DEF Limp Mode, and DEF Delete Kit DEF fluid, or Diesel Exhaust Fluid, is a 32.5% urea and 67.5% deionized water...
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: Symptoms, Costs & How to Tell the Difference
Updated on January 7 2026 TL;DR: Mistaking a leaking valve cover for a blown head gasket is a costly error. Learn to spot the difference: head gaskets cause white smoke and...
Ultimate Guide: 6.7 Powerstroke Oil Capacity & Maintenance Tips for F250, F350, F450
Updated on July 30, 2026. The 6.7L Powerstroke oil capacity depends on model year and truck class. Ford lists 13.0 quarts with filter for 2011–2022 Super Duty pickups and 15.0...
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