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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
5.4 vs 6.2 Liter Power
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<blockquote data-quote="BigJ" data-source="post: 98971" data-attributes="member: 62"><p>X2, but for slightly different reasons. To my knowledge, the pedal and butterfly valves are both closed loop systems. Each knows where it's supposed to be given the input voltage.</p><p></p><p>But in any case, tank is right. One of the easiest tuning jobs there is on setups like ours is to remap the pedal to throttle positioning table. In my experience some tuners will actually only do that, and charge a small fortune for it, sendin the customer home believing he just picked up 100hp.</p><p></p><p>To put it another way, consider that we have 0-100% movement in our gas pedals, and also consider that we have 0-100% power available from the engine.</p><p></p><p>Let's say the stock map tells the system to apply 5% power when the pedal is at 10%, then apply 15% at 20% and so on (just an example). Now let's say you get "tuned". The tuner remaps the relationship to look like 15% power at 10% pedal, then 35% power at 20%, and so on.</p><p></p><p>You go away believing you just picked up huge power because you're getting pinned to your seat when normally you'd feel lag, for the same pedal position. But in truth you have no more power than you did before; it's just being applied sooner, at the expense of having it available later in the pedal stroke.</p><p></p><p>In this truck, I believe this is part of what Ford did in the Off Road modes. Its a good thing off road. Not so much on road.</p></blockquote><p></p>
[QUOTE="BigJ, post: 98971, member: 62"] X2, but for slightly different reasons. To my knowledge, the pedal and butterfly valves are both closed loop systems. Each knows where it's supposed to be given the input voltage. But in any case, tank is right. One of the easiest tuning jobs there is on setups like ours is to remap the pedal to throttle positioning table. In my experience some tuners will actually only do that, and charge a small fortune for it, sendin the customer home believing he just picked up 100hp. To put it another way, consider that we have 0-100% movement in our gas pedals, and also consider that we have 0-100% power available from the engine. Let's say the stock map tells the system to apply 5% power when the pedal is at 10%, then apply 15% at 20% and so on (just an example). Now let's say you get "tuned". The tuner remaps the relationship to look like 15% power at 10% pedal, then 35% power at 20%, and so on. You go away believing you just picked up huge power because you're getting pinned to your seat when normally you'd feel lag, for the same pedal position. But in truth you have no more power than you did before; it's just being applied sooner, at the expense of having it available later in the pedal stroke. In this truck, I believe this is part of what Ford did in the Off Road modes. Its a good thing off road. Not so much on road. [/QUOTE]
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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
5.4 vs 6.2 Liter Power
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