Larger sway bars are the single best upgrade to keep your performance car flat in the corners, or give your family sedan sports car handling, without negatively increasing road noise or harshness. Just a mild cam change can result in 30 more horsepower at the wheels, or match it with intake and exhaust mods for a potential increase of over 100 hp. There are three main types, horsepower, brake horsepower, and wheel horsepower. Performance brake kits start at $150 for just pads and rotors. The problem is it moves sealed volumes of low-pressure air into a high-pressure area so as soon as it opens up on the high-pressure side, you get all this backward flow trying to push the air back the way it came. Dry and wet refers to the manifold because in the first method you’re only pumping nitrous into the engine without fuel. That's a great gain, and with additional supporting mods, you could be running a 300 shot through your engine any time you need it. It’s cheaper to do it yourself and infinitely better. Some people have space restrictions and end up putting the filter where it fits. This makes it so that all the gas exits each pipe at the same time for improved flow characteristics. Where does the term come from? Watt then divided by time to find the force and distance per minute. The really attractive feature of this mod for me is that it costs no energy (from the engine) to run, so the engine doesn't have to work any harder to get the boost produced. A 50-degree drop in temperature no longer means re-jetting the carb or struggling to get it started. You control the flow of nitrous using metal orifices called jets and by getting bigger flowing solenoid valves on the bottle. For you, there's the performance camshaft. What could be more awesome? Installation takes about an hour and can be handled by a beginner. That’s what they’re there for. More air means more horsepower. Aside from improving flow, cams with stiffer springs can allow the engine to rev higher and stay in a given gear longer, which gives you the advantage of more torquey gear ratio for a longer period of time. Now that we’ve gone over all of the textbook stuff, let’s have a little fun and talk about power adders that you can install on your car to begin that never-ending transformation from a car into a ride. This gives you much quicker throttle response and contributes to the whole better flow thing. I love superchargers. It includes the losses caused by engine friction, but before any losses of the drivetrain and gearbox. There it is! The smell of exhaust and PCV vapour is in the air. Car Modding, Car Tuning and the Science of Horsepower - Terms and Concepts. Many times a collector would like to know the horsepower of an unmarked engine. The last power-adder on my list is the PCM itself, the brains of the operation. The engine bay gets hot as you drive, so a cold air intake pulls cooler (denser) outside air into the engine. It’s fairly cheap, easy to do, it looks cool, and you get some small gains. You're done, after a brief re-learn procedure. Gains are virtually unlimited. Boost builds early, so you never have turbo lag. It accomplishes this with larger diameter tubing and by straightening as many bends as possible. So here’s an easy breakdown. When installing a new camshaft with more aggressive specs, engine rebuilders recommend using new lifters. An air filter can only do so much on its own, so help it out by swapping out the restrictive factory intake plumbing for a performance cold air intake. A device called an engine indicator measures the theoretical power by creating a plot between the pressure and volume curves inside the cylinders. When it comes to additives, there are many claims, many promises... and just as many disappointments. If you're doing forced induction, big cam, or other performance improvements above, your fuel demands will increase. That means you can get more of it into your engine. The world outside seems to lose its color like the wind is blowing it off. This method estimate horsepower by using the weight of the vehicle and the time it took that vehicle to travel a quarter-mile. So to correct this in 1972, the SAE net standard was set to make sure that all engines were measured using Net BHP. "Hot Rod" shows you how the install works here, calling it the easiest 142 horsepower they've ever bolted on. The techniques here give you the ultimate level of control over your naturally aspirated car's performance, allowing ease of future modding. That's nitrous, and it's one of the most exciting things you can do to a car! The technology is tried and tested, but it’s up to you how you want to proceed. The same logic that applies to your car applies to your other gas appliances so in this article we'll look at what's involved. The harder you hit the gas, the more boost you get, nice and even. It's affectionately called a “bump stick"—an appropriate name, as the cam looks like a metal stick with bumps down its circumference. More $$$. It’s a very nice buildup. Aftermarket intakes often increase the tube diameter, too, and straighten any unnecessary bends. “Back in my day," people upgraded Camaro fuel pumps with Corvette pumps, for a cheap way to increase gallons per hour by about 50%. Nitrous kits are somewhat universal, meaning you could have all the parts you need, but you'll likely need to buy a few extra parts to get it all plumbed in your specific engine. So, Watt, had a horse walk in circles to turn a grindstone in a mill. The eccentricity or steepness of the lobe controls how quickly it forces the valve open. You have to drive your car 50 or even 100 times to zero in on the perfect tune. The process is fairly efficient, and it’s using waste gas instead of engine power so you won’t break the bank driving with this every day. What you need to know to make your ride as fast, as powerful, and as awesome as possible. They include work done to the intake, exhaust and most stuff in between. I plan to spend an entire hub on this alone but suffice to say you can change every parameter in the car and easily add 10% or more just from programming alone. "Advanced engine simulations can also go way beyond performance predictions. Select options. These are a couple of hundred bucks but keep in mind that if you’re doing breathing mods, you won’t get the full effect unless you take care of all the restrictions since even one can choke your engine. Caution: Do not attempt to find your elapsed quarter-mile time on public streets or highways. As you watch the needle drop in slow motion, time stands still around you. Meaning, the supercharger that fits a LT1 5.7L won't exactly fit an LS1 5.7L. If one knows the bore and stroke, which are easily measured, an estimate of the horsepower rating of an engine can be obtained by using the given chart. Engine "Rough" Horsepower By Bowling This is simple determination of rough engine horsepower output based on a "mean" cylinder compression ratio. It's just a regular supercharger powered by an electric motor and independent battery bank instead of a belt coupled to the engine. Differentials transfer power from the engine to a pair of wheels but allow them to spin at different speeds, depending on how much the car is turning. During a race in a straight line, you don’t care, and you’d rather have the wheels locked so that if one slips, the other will take over. This causes them to spin up faster and faster. Of course, the best method to figure out how much power your vehicle is making is using a dynamometer. The computer ECU controls engine function by taking readings from all the various engine sensors and uses that info to compute the most efficient burn. The other grip upgrade you can opt for is a limited slip differential. Fuel systems and ECUs are quite a bit more complex now, but the idea is the same. Besides providing great gas mileage or easy parking, these cars can be fun to drive. Let’s get to it! But then you're left with the era's limitations and a bunch of suspect old parts. The limit on power is the limit on how much the engine will take without exploding. Valve springs return the valves to the closed position when the lobe has moved out of the way. We'll explore what VE is, why it's important and how to tune it! Are you ready to stop fooling around with the easy, newbie mods? You get as much as you put out. The old school EFI (pre-OBDII vehicles) will just need a bit of wrenching. It locks the wheels up when you floor it, and it slips when you’re doing a turn (hopefully you’re not gunning it through the turn). The throttle body is the next restriction after the intake tubing. You keep much of the sound and all of the flow so there’s almost no restriction and the sound is amazing! Mo Money Mo Horsepower T-Shirt $ 19.95 – $ 25.45. You want to put the end of the tube with the cone filter somewhere in the lower fender cavity or behind the headlight. Chriscamaro loves playing sports, modifying cars, and playing video games. You want to dump the exhaust into the rest of the system all at the same time, not in spurts coming from each pipe all out of synch. The principle with nitrous is to dump extra oxygen into the engine and with it, extra fuel. Connect the tuner, select the tune and your modifications, then wait a few minutes while it retunes the ECU. Boost is slang for forced induction. It can provide a direct boost to your horsepower output, better responsiveness in acceleration, and a superior fuel economy. You will want to know the terms and concepts here because they'll come up again and again. Ram air designs also have a collector or funnel to channel a larger volume of air into a smaller diameter pipe, to get as much of a ram effect as possible. Increasing the efficiency of the existing turbo provides more power but leaves OEM reliability in place. Tell us about it in the comments below. This helps you achieve “bonus” power at the mid to upper end, where you tend to need it. Sound waves go up through the holes and are damped out in the baffle. They will clean up the heads as well. The lobe position on the cam controls when the valve is supposed to open. Well, all superchargers are driven by belts which are connected directly to the engine. Hope you found it helpful! There’s a shaft that couples the turbine to a compressor that is basically a centrifugal supercharger. I encourage you to check out my other car performance hubs and do whatever research you need, to know this stuff inside out. A high-flow catalytic convertor is the way to stay emissions and inspection legal, while reducing backpressure. This is where to start when you want to seriously upgrade your ride. It's only when going heavy on big performance increases that you'll need to upgrade the fuel system. For even more sports car grip in the corners, look to sport springs. About the only maintenance issues are keeping it oiled and occasionally replacing the belt. Careful with the MAF too. A limited slip differential uses a torque sensitive clutch to achieve the best of both. That number equals one new unit of measure, which Watt called horsepower. You have to wash that off and replace it when you service the filter. That's a great gain, and with additional supporting mods, you could be running a 300 shot through your engine any time you need it. You carefully feather the gas, keeping tire chatter to a minimum, waiting for that bite. This requires including the approximate accessories that are added in production.
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