Performance Mods That Pack a Punch A project car in the form of a WRX/STI shows that Z Sport in Everett, WA, is all about ­balancing ultimate performance within legal parameters and practicality. See what performance modifications the shop has completed with that goal in mind. More

Tech Feature: Special Tools for Steering and Suspension Work Steering and suspension work, like engine repair or electrical diagnosis, often requires special tools for certain jobs. More

Selling Shocks & Struts: Getting Past Your Feelings so You Can Sell More Ride Control Early in my career, I was young, stupid and drove some of the most dangerous vehicles in terms of unperformed repairs because I knew that I could fix it "someday." I believed in the philosophy that a car was half worn, not half broken. More

Tech Tip: Hyundai Power Steering Pump Whining Noise Before replacing a power steering oil pump on a 2003 Accent for a "whining" noise condition, check the oil pump reservoir filter screen for contamination. If the filter screen at the bottom of the oil pump reservoir is clogged, it may cause the pump to aerate and produce a "whining" noise. More

Tech Tip: Toyota Driveshaft Assembly Replacement This bulletin provides information regarding anti-corrosion grease that is present on replacement driveshaft assemblies. It's important to remove this grease prior to installing the hub nut to prevent over-tightening. More

Tech Feature: Servicing MacPherson Struts In today's fast-paced import service market, it's easy to forget the basics of inspecting and repairing MacPherson struts on front suspension systems. But before we get into servicing MacPherson struts, let's take a look at the design and function of most modern front suspension struts. More

Tech Tip: Rodeo Steering Wheel Vibration, Shimmy or Nibble Some Rodeo owners may comment on the presence of steering wheel vibration or shimmy during vehicle operation at medium to high speed. More

PT Cruiser Chirps at the Drive Belt Some PT Cruiser drivers may comment that their vehicles have started making strange sounds. More

Tech Tip: Cadillac DeVille Makes a Moaning Noise If a customer complains about a moaning noise in his or her 1998 Cadillac DeVille, it may be due to the steering system frequencies. More

Tech Tip: Strut Installation Issues The left or right suspension strut installs OK, but the other side won't line up correctly. More