So a small throttle body is going to improve our torque modulation, our airflow modulation, large throttle body makes that a little bit trickier. This is really important to be able to get the most out of that car. Let's start though with the basics and this should go without saying but we're going to say it anyway, we need to talk about what the throttle body is there for and on a petrol/gasoline engine, the throttle body is there for our torque modulation and what we're doing, unlike a diesel engine where we don't need a throttle body, with the gasoline engine we need that throttle body to modulate the amount of airflow into the engine and by modulating the airflow into the engine we're therefore controlling the torque and this is really important, the key here is that if we've got good modulation of our airflow, good modulation of our torque, it gives the driver the ability to very accurately control the amount of power and torque the engine's delivering and particularly for a race application, this is really critical if we're talking about road racing, getting torque modulation through corners, particularly in a car that is traction limited so it's got more power than it can put to the racetrack through a corner. Unfortunately what you are going to find here is that while I can give you some general guides, some general rules of thumb, there isn't a lot of black and white here because as you could probably understand, there are so many variables here depending on the type of engine, the modifications to that engine that will really end up defining what the ideal throttle body size for that particular application is.īut we'll give you some guidelines and then we'll show you as well how you can actually test and find out if your throttle body is giving you a restriction. So we're going to dive into that topic, as usual we will have some questions and answers at the end. ![]() Particularly at part throttle so this is something that's very easy to overlook due to the way the airflow goes through a throttle body. Tune may be required depending on modifications.- Hey team, Andre from High Performance Academy here, welcome along to another one of our webinars and this time we're going to be discussing the topic of throttle body sizing.Īnd this is an area that I know there's a lot of confusion about and I tend to see most people err on the side of going too large on their throttle body.Īnd the idea here is they're thinking that a larger throttle body is going to reduce restrictions and hence is going to give them more power.Īnd yes there's obviously some truth in that but once we go past a certain point, going to a larger throttle body is going to give you no improvement in power and what it can actually introduce is some problems with throttle modulation or airflow modulation which actually will make the car harder to drive. ![]() There is no need to transfer anything over from the factory unit and the Granatelli Motor Sports 95mm throttle body is designed to work with all intakes, including the stock intake. The increased size also allows for smoother and quicker engine acceleration. Our 95mm throttle bodies are precision machined to exceed the demands required for increased airflow on all Hemi performance applications, both naturally aspirated and forced induction.Ĭan be used with factory or aftermarket manifolds. Granatelli Motor Sports is proud to offer our 95mm throttle bodies for 2013-2019 Dodge Hemi Drive-By-Wire applications.
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