Re: Re: Re: Ford Powerstroke

Posted by T_Bone on April 21, 2004 at 18:57:41 from (4.240.96.74):

In Reply to: Re: Re: Ford Powerstroke posted by Scott KY on April 21, 2004 at 06:22:17:

Hi Scott,

Most chips improve preformance in the upper RPM range, 2200 to 2800rpm or in the HP range. Chips also accellrate engine wear. In choosing a chip first look at the chip mfg torque and HP graph (they do have one don't they?) then compare with a stock torque/HP graph for the engine mfg, (not the chip supplier) and see where the chip makes a difference.

You'll find it's very hard to buy a chip that improves engine preformance that has usable RPM range of a diesel, 1600rpm to 2000rpm.

My stock PSD makes maximum torque RPM at 1600rpm and stays pretty flat until 2800rpm maximum peak HP. Torque is what pushs the load and HP is how fast you move that load or time.

To use maximum peak HP RPM cost 40% more fuel than using maximum peak torque RPM, not counting extra engine wear.

So if your not running a race, you want torque as it's cheaper to use in a reasonable amount of time and makes the engine last a long time.

I pull by maximum torque rpm or 1600rpm and average 14.2mpg pulling 16k GCW.

T_Bone

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