It’s All about Compromise

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It’s All about Compromise

Michael Leech • January 30, 2017

Hello!
First, please allow me to start off by apologizing; it has been far too long since my last post. The inspiration for today’s post comes from a conversation with a customer and acquaintance, that is interested in improving the original performance from his ’04 Chevrolet Suburban. He’d already installed a cold air intake, and was interested in obtaining more performance. He theorized that his new K&N intake was adding so much air that the engine computer now needed reprogramming to “put” the additional fuel into the truck. I hated to burst his bubble that it wasn’t quite that simple. Even though a cold air intake does definitely make a difference in the net volume of air that can enter an engine, it does not yield an improvement that woud put the ECM “out of range” to where the original equipment programming would no longer be adequate. Consequently, the performance gains from simple programming, while real, would be relatively minimal. Dyno testing that I have done in the past ‘before and after” for cold air intakes, exhausts, and software have netted around 8-12% for all three components. This brings me to the heart of our converation: “Why”?

The answer is that an engine is a “system” not a “part” in a car. Air intake is a “system”, not a “part”. Exhaust? Yep, you guessed it- it’s a system. Upgrading a part of a system does not necessarily improve flow through the whole system. IMHO, the improvement from a cold air intake comes mainly from the decrease in inlet temperature, allowing denser air, which can be paired with more fuel. The net improvement to flow when paired with a stock throttle body, intake manifold, camshaft, and valves is relatively small. Air intakes are cheap and easy to design. Automotive engineers are really smart guys. If they could install a slightly larger intake, and make more power, they would do it from the factory. Ditto the exhaust, ditto the software. Why do these aftermarket parts make an improvement, then, you ask?

The answer lies in the fact that automakers are limited by compromise in their system designs. Cost, emissions, performance, noise, vibration, fuel economy, etc are all factors that must be accounted for by the engineer. In the case of the intake and exhaust, they are looking to limit the noise and reliability from the systems, and that causes them to use designs that are slightly more restrictive. So you can go to the noisier parts and get slightly better flow. Just don’t expect too much! After installing them, a programmer can help slightly as well. Just don’t expect too much! The stock system is pretty good at compensating for adjustments to air flow. Your performance increase from programming in a stock V8 GM probably has more to do with EGR reduction and ignition timing than air/fuel mapping. These are adjustments to the “system”. So we KNOW there will be a compromise! Where is it? In the case of the software the compromise is in increased combustion chamber temperatures, increased exhaust temperatures, and increased production of oxides of Nitrogen, CO, and CO2. This results in decreased engine life, and decreased catalytic converter life- these are HUGE turn-offs to automotive engineers. Rememer, there’s no free horsepower- it ALWAYS has a cost.

If you really want big power, and not just inexpensive incremental upgrades, you go whole hog and put in a “shorter” differential gear, or super/turbo charge the thing. It’s expensive (especially the forced induction upgrade) but it’ll wake it up- you will notice a LARGE difference. However, these complex aftermarket systems are usually beyond the ability of the average person (even the average technician) to install or repair, and they are less reliable than the stock setups. Obtaining service parts for forced induction systems can be very challenging as well.
Want a cheaper method with the maximum in reliability? Buy a vehicle with higher levels of stock performance! An 04’ Silverado with a 4.8L V8 is worth essentially the same as one with a 5.3L V8. If your 4.8 is feeling a little “soft” do yourself a favor and find a truck with a 5.3L and buy that first! If, at that point, you still want more than the first step is finding a PROFESSIONAL with experience in performance upgrades and having realistic expectations before you begin making changes!
Drive happy!

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Why Your Steering Wheel Feels Stiff: Common Causes & Fixes in Newport News

March 20, 2025

At Pro Auto Repair in Newport News, VA, we know that a smooth, responsive steering experience is essential for safe and comfortable driving. If you've ever encountered a stiff steering wheel, you know how concerning and frustrating it can be. Whether you're making tight turns or navigating through busy streets, a stiff steering wheel can significantly impact your driving experience. A stiff steering wheel often indicates that something isn’t quite right with your vehicle’s steering system. In this blog post, we’ll explore the most common causes of a stiff steering wheel and how Pro Auto Repair in Newport News, VA can help you resolve the issue, ensuring your vehicle runs smoothly and safely. The Importance of a Smooth Steering System Your vehicle’s steering system is a vital component for maintaining control of your car, truck, or SUV. A smooth and responsive steering system allows for precise control when navigating curves, parking, or driving at high speeds. If your steering feels stiff or unresponsive, it can make driving more difficult and potentially dangerous. Keeping your steering system in top condition is essential for your safety. Regular maintenance and addressing any steering issues promptly will ensure a more enjoyable driving experience and help you avoid costly repairs down the line. Common Causes of a Stiff Steering Wheel Several issues could cause your steering wheel to feel stiff. Let’s break down the most common causes and explain how Pro Auto Repair in Newport News, VA can help you address them. 1. Low Power Steering Fluid One of the most common causes of a stiff steering wheel is low or contaminated power steering fluid. Your vehicle’s power steering system relies on fluid to make steering more effortless, especially at lower speeds. If the fluid level is low or the fluid is dirty, it can cause the steering wheel to become stiff or difficult to turn. How It Happens: Power steering fluid can leak over time or degrade, reducing its effectiveness. Contaminated fluid can also cause the system to malfunction, resulting in hard steering. What to Do: If you suspect low or dirty power steering fluid, it’s essential to have it checked and replaced. At Pro Auto Repair , we can quickly assess your fluid levels, flush the system if necessary, and ensure the right fluid is added to keep your power steering system functioning smoothly. 2. Worn or Damaged Power Steering Pump The power steering pump is responsible for pushing the fluid through the power steering system. If the pump begins to wear out or break down, it can result in a stiff or unresponsive steering wheel. A faulty pump may also cause whining noises when turning the steering wheel. How It Happens: Over time, the power steering pump can become damaged due to wear and tear, excessive heat, or contamination in the fluid. What to Do: If you notice whining noises or difficulty turning the steering wheel, it's important to have your power steering pump checked. Pro Auto Repair in Newport News, VA, can inspect your pump and replace it if necessary, restoring smooth steering. 3. Damaged Steering Rack or Tie Rods The steering rack and tie rods are essential components that connect your steering wheel to the wheels of your vehicle. If either of these parts becomes damaged, it can lead to stiff steering. A damaged steering rack can cause your steering wheel to feel tight or unresponsive, while damaged tie rods can lead to misalignment, which affects your vehicle’s handling. How It Happens: The steering rack and tie rods can become worn or damaged from age, rough driving conditions, or accidents. When they break down, your steering system will suffer, often resulting in stiffness. What to Do: If the steering rack or tie rods are damaged, it’s critical to have them replaced immediately. Pro Auto Repair offers professional steering system repairs, including steering rack replacement and tie rod replacements, to restore your vehicle's handling and steering precision. 4. Faulty Serpentine Belt The serpentine belt plays a key role in powering various components of your vehicle, including the power steering pump. If the serpentine belt becomes loose, worn, or damaged, it can prevent the power steering pump from working effectively, causing stiffness in the steering wheel. How It Happens: Over time, the serpentine belt can wear out or slip, reducing the amount of power sent to the power steering pump. This can result in reduced steering assist and make the steering wheel harder to turn. What to Do: Regular inspection and maintenance of the serpentine belt can help prevent this issue. If you notice your steering becoming stiff, have the belt checked at Pro Auto Repair , where we’ll ensure it’s properly tightened or replaced as needed. 5. Alignment Issues Your vehicle’s alignment affects how the wheels are positioned in relation to the steering components. When the wheels are misaligned, it can lead to uneven tire wear, pulling to one side, and, in some cases, a stiff steering wheel. Misalignment can also cause your vehicle to feel unstable while driving, especially at higher speeds. How It Happens: Misalignment can occur due to hitting a curb, driving over potholes, or general wear and tear on the suspension components. What to Do: If you’re experiencing a stiff steering wheel alongside pulling to one side or uneven tire wear, it’s a good idea to have your vehicle’s alignment checked. Pro Auto Repair in Newport News, VA, offers professional wheel alignment services that will restore your vehicle's steering precision and improve overall handling. 6. Worn Out Steering Column or Bearings The steering column and bearings are part of the system that connects your steering wheel to the rest of your vehicle’s steering components. If these parts become worn out or damaged, it can cause the steering wheel to feel stiff or difficult to turn. How It Happens: Over time, the bearings can wear down, or the steering column can become misaligned, leading to stiffness in the wheel. This issue is more common in older vehicles or those with higher mileage. What to Do: If your steering wheel feels tight and you’ve ruled out other causes, it could be a sign of issues with the steering column or bearings. Our expert technicians at Pro Auto Repair can diagnose the issue and replace any worn-out components, restoring your steering system’s performance. How Pro Auto Repair Can Help in Newport News, VA At Pro Auto Repair , we specialize in steering system repairs and maintenance. If your steering wheel feels stiff, don’t wait for the problem to worsen—bring your vehicle in for a professional inspection. Our experienced technicians will assess the issue, whether it’s low power steering fluid, a faulty pump, worn-out components, or something else entirely. We’ll provide you with a reliable diagnosis and the necessary repairs to restore smooth steering and keep you safe on the road. Preventive Maintenance for Smooth Steering To keep your steering system in top shape and avoid stiff steering, regular maintenance is essential. Here are some preventive measures you can take: Check fluid levels regularly: Ensure your power steering fluid is topped off and replace it when it becomes dirty or contaminated. Inspect your steering system: Have your steering components, including the pump, rack, and tie rods, checked regularly for wear and tear. Maintain proper alignment: Get your vehicle’s alignment checked every year or whenever you notice signs of uneven tire wear or steering issues. By staying on top of these maintenance tasks, you can keep your steering system running smoothly and avoid costly repairs down the road. Schedule Your Steering System Check at Pro Auto Repair Today If your steering wheel feels stiff or unresponsive, don’t wait for the problem to worsen. Schedule a professional inspection at Pro Auto Repair in Newport News, VA, today. Our expert technicians will diagnose the issue and ensure your steering system is in optimal condition, so you can enjoy a safe and smooth ride.