It has to power other things, such as your transmission, A/C, etc. The problem is, in the real world, it’s harder for your engine. This is the horsepower the engine makes if you took it out of the car and put it on a test stand. The above formulas refer to crank horsepower. It looks close enough to me! Wheel vs Crank HP Measured HP Naturally AspiratedĮxpected HP Turbo psi boost: 451 (11.9 / 14.7 + 1) Then they added a turbo and 11.9 psi of peak boost. The goal is to test that the formula works given known naturally aspirated horsepower and then applying a known boost. We don’t really care that the base naturally aspirated hp is now different. The combination without a turbo produced 451 hp on the dyno. They then beefed the same engine up with a cam and custom heads. Slightly less than the calculated 550 hp makes sense, as we wouldn’t expect to get more than the calculated amount. Once they added the turbo, they measured 532hp on the dyno. LS engine example 1: Measured vs Calculated Turbo gains Let’s use the formula and see how it held up: Measured HP Naturally AspiratedĮxpected HP Turbo boost: 333 (9.6 / 14.7 + 1) They then added a turbo and 9.6 psi peak boost and measured again. So in an article on Motor Trend by Richard Holdener, they started with a naturally aspirated LS engine and measured it on the dyno. In reality, it will be less and depends on if your setup can handle that much horsepower. These formulas give you the maximum horsepower.Īssuming that the car has the proper parts and tuning, then this would be the horsepower that you could get. Basically, the stock hp of your engine, unless you have mods.īoost psi = The boost pressure of the turbo measured in psi
#Turbo calculator hp install#
Install an aftermarket intake manifold - A performance intake manifold can improve air distribution to the cylinders, increasing horsepower.HP increase = the calculated total horsepower with the turbo installed.
#Turbo calculator hp upgrade#
Upgrade the engine's valvetrain - Installing stiffer valve springs, stronger pushrods, and lighter rocker arms can help the engine rev higher, increasing horsepower.Lighten the flywheel - A lighter flywheel can help the engine rev faster, improving throttle response and increased horsepower.Install a larger throttle body - A larger throttle body can allow more air into the engine, increasing horsepower.Improve the engine's cylinder head - Porting and polishing the cylinder head can increase airflow into and out of the engine, improving horsepower.Upgrade the engine's cooling system - This can help dissipate heat more efficiently, increasing horsepower by preventing heat-related power loss.Replace the engine's stock pistons with high-performance pistons - This can increase compression and improve engine efficiency, increasing horsepower.Install a high-performance ignition system - This can improve spark timing and voltage, increasing horsepower.Upgrade the engine's camshaft - This can change the timing and duration of the valve openings, increasing horsepower.
Install a nitrous oxide injection system - This can temporarily boost horsepower by introducing highly oxygenated gas into the engine.Upgrade the engine's fuel injectors - This can improve fuel delivery and combustion, increasing horsepower.Add a turbocharger or supercharger - These devices force more air into the engine, which increases horsepower.Install a performance chip or programmer - This can adjust the fuel-to-air ratio, ignition timing, and other engine parameters to increase power.Upgrade the exhaust system - A performance exhaust system can help reduce back pressure and improve exhaust flow, which can increase horsepower.Install a performance air intake system - This allows more air to flow into the engine, improving combustion and increasing horsepower.
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