When the odometer on a pickup, SUV, or crossover rolls past 50,000 miles, and the tires have never been replaced, it’s a safe bet there’s not much tire life remaining. If that’s the case then the new Michelin replacement treads might be just what your prickup or SUV needs…

Hums, whines, buzzes, crackles, pops and other unexpected noises blasting out your rig’s speakers not only ruins tunes, they are really frustrating when you can’t figure out how they happen in the first place. Anyone who has a good audio system wants clean, vibrant sound. Unexplained background noises ruin the day. So, let’s go noise hunting and kill off the little culprits responsible for the unwanted intrusions!

The growing proliferation of different audio amps has made it difficult for audiophiles to figure out which one is best for their application. But audio design engineer Robert Zeff provides a technical look at what makes different class amps tick….

One aftermarket diesel-engine performance-parts manufacturer is blazing a new road toward more reliable big-rig fuel-economy testing standards. Read how they plan on providing accurate mpg numbers…

Electronic diesel-engine tuners and fuel mileage claims
by Bruce W. Smith
One question most Custom Rigs readers ask is, “How do the manufacturers of performance engine modules and software upgrades get their fuel mileage numbers, and are those numbers legit?”
While not all of the aftermarket manufactures of such products are quick to reveal their findings or test procedures, [...]

Putting the Pittsburgh Power Upgrade To The Test On A Cat
ACERT C-15
by Hib Halverson
 
Few things bring as much satisfaction to  a custom rig owner as hitting a long uphill grade with 50,000 pounds hooked to the platter and being able to effortlessly pull away from those struggling along in the slow lane. [...]