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Does anyone know how the XRT hp numbers are figured, are they dyno numbers? Is it as simple as adding up the numbers and that is the amount that i have, for instance stock horsepower 345?? plus the 175 tune= 520 ?????:confused013::confused013:I know we all lose HP through the drive train and all that good stuff, im just curious
 

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A lot depends on your modifications and its a complex process.

The 175 tune is calculated at the rear wheels. Stock 6.7's are usually in the 260-280 rwhp range. So it "should" put your truck around 430-450.
 

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the pickups are 350 right??? we have put a couple stock 6.7's on the dyno and they both did right around 350. wich i thought was pritty impressive for compleatly stock.
 

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I think they are 350 at the crank mine did 293 to the wheels stock
 

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Our tunes are named from dyno numbers obtained on our Mustang 1100 SE load dyno. Stock is generally between 275-305 to the rear wheels, so adding 175 will put you between 450-480. Obviously there is huge differences from truck to truck, and some trucks will dyno a little more or a little less. The average readings we see at our shop with the 175 tune loaded up is 455 and 1050 on torque.

Casey
 
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