more power!!!!!!!!!!!!!!!!!!!!!!!!
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Joined: Oct 2005
Posts: 2,209
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From: Louisville, Kentucky
i have an 01 f150 s crew 4x4 5.4l auto trans it has exhaust intake and 35 inch tires i am debating between an edge programmer or hypertech which one is better???? i wants alot more torque and power. whats the best way to get more power out of these trucks minus supercharger or nitrous???
As other have said here, the main reason that you are down on power is those excessively tall tires. A lot of people do not understand the effect that taller tires have on the gearing of the truck and how that in turn effects the power band of the engine. Most likely your truck has 3.55 gears in it. With the OE size tires that came on the truck, the 35 inch tires have effectively raised the gear ratio to 3.04 gears. With this in mind, you can tune on the engine for a long time before you will ever get it running like it did with stock wheels and tires.
To get the power that you are looking for, you must change the gears first. Your truck being a 4x4, will require both the front and rear axles to be changed with new gear sets. To get back what was lost, you will need 4.10 gears. To make it a bit peppier, go with 4.56 gears. Good luck!
Senior User
Joined: Jun 2004
Posts: 313
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As other have said here, the main reason that you are down on power is those excessively tall tires. A lot of people do not understand the effect that taller tires have on the gearing of the truck and how that in turn effects the power band of the engine. Most likely your truck has 3.55 gears in it. With the OE size tires that came on the truck, the 35 inch tires have effectively raised the gear ratio to 3.04 gears. With this in mind, you can tune on the engine for a long time before you will ever get it running like it did with stock wheels and tires.
To get the power that you are looking for, you must change the gears first. Your truck being a 4x4, will require both the front and rear axles to be changed with new gear sets. To get back what was lost, you will need 4.10 gears. To make it a bit peppier, go with 4.56 gears. Good luck!
To get the power that you are looking for, you must change the gears first. Your truck being a 4x4, will require both the front and rear axles to be changed with new gear sets. To get back what was lost, you will need 4.10 gears. To make it a bit peppier, go with 4.56 gears. Good luck!
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