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Edge's new CTS4 family puts monitoring and tuning on the same display platform, but the products do different jobs. Here are five checks for truck owners before ordering or installing one.Read now -
Holley’s Throttle-Body Sizing Guide: Match Airflow to the Whole Build
Read nowHolley’s new sizing guide is a reminder that a bigger throttle body is not an automatic power gain. Check the whole intake path, fitment and calibration before buying.
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2026 SEMA Tool Trends: What Better Diagnostics, Measurement and Documentation Mean for Performance Builds
SEMA’s latest tools and equipment preview highlights a bigger truth for performance builds: accurate diagnostics, measurement, torque control, safe lifting and documentation matter as much as the parts.Read now -
Performance Mods and ADAS: What to Check After Wheels, Tires, Suspension or Windshield Work
Wheels, tires, suspension, alignment, bumpers and windshields can change the geometry that cameras and radar rely on. Here is a practical ADAS planning checklist for modified vehicles.Read now -
LS Fest East 2026 Is Almost Here: 9 Checks Before Your Performance Car Hits the Road or Track
Read nowHolley LS Fest East returns September 11–13, 2026. Use this nine-point pre-event checklist to inspect tires, driveline hardware, cooling, fuel pressure, fluids, data logs, brakes, suspension, and safety equipment before your LS- or LT-powered car reaches Bowling Green.
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Holley’s New Gen V LT EFI Top-End Kits Pair Ultra Lo-Ram, 102mm Throttle Body & Injectors
Holley has added new Gen V LT EFI Top-End Kits combining Lo-Ram or Ultra Lo-Ram intake hardware, a 102mm Sniper throttle body and 42, 100 or 120 lb/hr injector choices. Here’s how to think about airflow, boost, fuel, clearance and calibration before choosing a package.Read now -
1,200 HP Driveshaft, 150 MPH Critical Speed? Why Horsepower Rating Isn’t the Whole Story
A driveshaft can be strong enough for four-digit horsepower and still have a separate speed limit. Using Driveshaft Shop’s 2009-2015 CTS-V aluminum and carbon-fiber shafts as a real-world example, SMG explains driveshaft critical speed, why shaft rpm differs from engine rpm, and what to check before choosing a performance driveshaft.Read now -
The C8 Z06 Shares About 80% of Its Engine With the GT3.R: What That Means for LT6 Mods
GM says the road-going C8 Corvette Z06 now shares about 80% of its engine components with the Z06 GT3.R race car. Here’s what that race-bred LT6 architecture means when choosing intake, exhaust and dyno-tested performance upgrades.Read now -
PennGrade 1 Adds Full Synthetic Oils: What 5W-30 vs. 5W-40 Means for Boosted and Track Cars
Read nowPennGrade 1 has added a new full synthetic high-performance oil line. Here is what 5W-30 vs. 5W-40 really means for boosted, high-RPM and track-driven engines, and why oil temperature, clearances and real data matter more than horsepower alone.