A cold air intake allows your engine to breathe better by pulling in cooler, denser air. This improves combustion, increases horsepower, and even enhances fuel efficiency.
Benefits:
Improved throttle response
Slight increase in MPG
Aggressive engine sound
Upgrading your tires and wheels is one of the best ways to immediately feel more control, especially during cornering and acceleration. High-performance rubber offers better grip and can handle more power after other modifications.
Benefits:
Improved handling
Enhanced road feedback
Boosts the effectiveness of suspension upgrades
This is where Oniell’s shines. If you’re adding power under the hood, your transmission needs to be able to handle it. We offer performance transmission tuning, shift kits, and even full rebuilds to ensure your drivetrain is ready for more torque and power.
Benefits:
Faster, smoother shifts
Prevents slippage under load
Reduces wear on drivetrain components
Also known as a “tune” or “reflash,” this mod adjusts your car’s software for optimized performance. You can increase horsepower, torque, and throttle response—especially when combined with intake and exhaust upgrades.
Benefits:
Unlocks hidden power
Customizable for your driving style
Can improve fuel economy
Let your engine breathe and sound better. Upgrading your exhaust system reduces backpressure and allows spent gases to exit more efficiently. It also provides that signature growl every car enthusiast loves.
Benefits:
Adds horsepower
Deepens exhaust tone
Can be paired with headers for even more performance
Better springs, shocks, or full coilover systems not only enhance handling but also give your car a more aggressive stance. It’s a must-have if you’re adding power.
Benefits:
Better stability at speed
Reduces body roll
Enhanced road feel
Before going full performance, make sure your oil, brakes, air conditioning, and general vehicle maintenance are in check. A high-performance car is only as strong as its weakest system. Oniell’s offers complete vehicle inspections so you can build on a strong foundation.
Not all upgrades have to be done at once. At Oniell’s, we can help you plan your build in stages—and offer finance options for major upgrades. Combine your performance modifications with one of our service specials or use a coupon to save on installation costs.
We’re your Grand Rapids performance modification experts. Whether you’re looking for power, better grip, or more efficient shifting, our team is ready to help.
👉 Contact Oniell’s Transmission to schedule a performance consultation today.
At O’Neill’s Auto & Transmission, we specialize in providing transmission tune-up services to keep your car running smoothly. Located in the heart of Grand Rapids, Michigan, we are proud to serve our local communities, including Rockford and Wyoming, MI.
When it comes to auto maintenance, it’s easy to focus on obvious essentials like oil changes, brake service, or rotating your tires. But there’s one crucial component that quietly keeps your vehicle moving—and that’s your transmission. At Oniell’s Transmission in Grand Rapids, Michigan, we believe your transmission deserves just as much attention as your engine.
Neglecting it doesn’t just put your vehicle at risk—it hits your wallet, too. Let’s dive deep into why routine transmission maintenance is essential for long-term vehicle efficiency, safety, and savings.
Upgrades like cold air intakes, ECU tuning, and performance exhaust systems are among the top mods for boosting horsepower.
Yes, some modifications like ECU tuning and cold air intakes can actually improve fuel efficiency, while others may slightly decrease it depending on the setup.
Most mods are legal if they meet state emissions and safety requirements, but always check local laws before installing.
Costs vary based on the type of upgrade—ranging from a few hundred dollars for intakes to several thousand for suspension or transmission builds.
Some modifications can impact your warranty, especially if they affect the powertrain. It’s best to consult your dealership or service provider before making changes.
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