The Question We Hear All the Time If you’re building a high-performance BMW engine, at some point you’ll ask: “Should I run steel or titanium valve spring retainers?” It’s a great question—and the wrong answer can cost you reliability, money, and peace of mind. Let’s break it down the right […]

Real talk—this isn’t speculation. We’re seeing tariff increases approaching 50% on key European-sourced BMW performance parts, and it’s already affecting pricing, availability, and future builds. After decades in this industry, we don’t react to headlines—we watch real numbers. And right now, those numbers are changing fast. 1. What We’re Seeing […]

The BMW S65 V8 is one of the most respected naturally aspirated engines ever produced. Designed by BMW M engineers for high-revving performance, it has proven itself across both street and motorsport applications. This build takes that platform significantly further. This is a 750-horsepower supercharged S65 stroker engine, engineered from […]

If you’re searching for BMW 4-wheel alignment, BMW wheel alignment, or BMW alignment near me, your vehicle is likely showing signs of improper suspension geometry. From an off-center steering wheel to BMW pulling to one side or uneven tire wear, BMW alignment directly affects handling, braking stability, and tire longevity. […]

Weak or Clogged Injector Symptoms You Should Never Ignore (Starting at $129.95) When a fuel injector has a weak coil or its nozzle is clogged, the engine can no longer deliver the correct amount of fuel. This leads to several noticeable performance issues: Loss of Power The engine struggles to […]

The Performance Racing Industry (PRI) is roaring back to Indianapolis from December 11–13, and VAC Motorsports will be right in the thick of it at Booth #1743. This year, we’re not showing up light—we’re bringing a technological sledgehammer. Headlining our space will be the VAC Dealer Miami Engines –built 1650HP […]

The BMW S54 engine — the heart of the legendary E46 M3 and Z4M — remains one of the finest naturally aspirated inline-six engines ever built. With its silky-smooth revs, individual throttle bodies, and motorsport pedigree, it’s a masterpiece of German engineering. Yet, even perfection can be improved upon. At […]

BMW’s are engineered for performance — featuring precision steering, a balanced chassis, and a cockpit that hugs the driver. But if you’re over six feet tall, that cockpit can feel more like a squeeze. From cramped knees in an E46 M3 to bumping your head in a brand-new G80 M3, […]

As a show of appreciation, for each race in 2025-26, we’re recognizing one of our sponsors for their generosity and commitment to BMW Car Club of America. VAC Motorsports was recognized at the recent Summit Point race weekend. For nearly 30 years, Tony Salloum has been racing with New Jersey […]

Low vs. High Compression Pistons in BMW Performance Builds: What You Need to Know Whether you’re building a high-revving naturally aspirated E46 M3 or boosting an N54 to four-digit horsepower, your piston choice can make or break your engine’s performance. One of the biggest decisions you’ll face when building a […]

The Beginning (1984–1990): The Foundation Years Founded in Philadelphia, PA in 1984, VAC Motorsports began as a BMW-only performance shop, born out of pure racing passion and mechanical precision. At a time when most were just beginning to understand the tuning potential of Bavarian machines, VAC was already blueprinting engines, […]

Table of Contents: BMW has a well-earned reputation for producing smooth, high-revving engines that deliver both performance and refinement. From the iconic S54 in the E46 M3 to the high-strung S65 V8 in the E9X M3, BMW motors are often designed to spin well beyond 7,000 RPM, and sometimes even […]

Maximizing BMW S58 Engine Performance: Best Upgrades & Expert Tips The BMW S58 engine is a powerhouse, delivering robust performance straight from the factory. Found in high-performance BMW M models, this twin-turbo inline-six engine is built for enthusiasts who crave power and reliability. However, with the right upgrades and best […]