I have never owned a diesel truck ,(but I still have dreams) I was wondering why it is diesels seem to have far greater response to power tuners or programmers than gas motors. If you do add much power to gas motors you have to go to premium gas, which nowdays is an arm and a leg. I really enjoy surfing this site, I learn alot. My wife does not appreciate how much I learn though, because it usually costs money!!! Thanks, Dan
1999 F-250 SD,7.3,Auto,4x2,XLT,Supercab
2003 Ford Focus SE, 2.0 SOHC, Auto
2003 Honda Rancher ES 4x4
Yes in general it's easier to get more of an increase out of a diesel. The major reason is that diesels run w/ excess oxygen
9very lean compared to gas motors), therefore all you need to do is add more fuel, and bam, more power. ussually "chips"-"programmers" do alittle more than this (injector timing, boost levels). Another reason is that you get a bigger boost from exhaust because of the turbo, reducing backpressure can allow the turbo to spool up faster and easier. You don't need premium fuel in a diesel because of A: the way/when the fuel is injected/ignited. and B: the inherently different properties of diesel. Theres quite a bit more to it than just this ,but these are the basics of your question.
"I have heard from many people including Powerstroke fanatics that the Cummins responds alot better to modifications and at the same time is considerably cheaper. One Powerstroke owner shared his belief on the "easier and cheaper" so much so that he said it just wasn't as fun as modifying a PSD. I believe he worked at a truck modification shop and he said he knew this from experience."
This is something I said on the PSD vs. Cummins thread and nobody disputed it. But I believe the whole diesel setup and the way it works is superior to gas motors especially for towing and modifying.
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