flash7210 wrote:
For the most part, all the DIY tunes increase the amount of fuel that gets injected by one way or another.
(higher rail pressure, increased duration, or both)
More fuel = more power.
There is also some adjustments to the turbo boost to keep it in line with the increased fuel.
Thanks for that - these are pretty much the lines I was thinking it would operate along.
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As far as the Nm (torque) rating goes, thats just someone's best guess.
AFAIK, no one has actually tested any of these on a dyno.
And I'm fine with that; mainly, I just wanted to have a yardstick for what might be going on with each tune. The raw numbers are less important to me since my goal isn't to do nine-second quarter-miles or anything like that, but it does give at least some indication of where things sit in relation to the stock numbers as well as each individual tune. Ballpark estimates are good enough in this case.
FWIW, any sort of torque converter replacement is much lower priority (for now) than getting the fuel / EGR weak spots out of the system. I definitely see the advantages, but that's not where I want to put the money for the time being. That means power is also a lesser consideration, but not one that's totally off the table.
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So try each one to see which one you like. Your butt will give you a good indication of which has more power.
So will you torque converter when it shudders
I've ran all three of the 811 tunes and I like the Yeti stage 2 best.
Good to know. I was actually sort of leaning towards that one, but will give each one a shot and see where the happy spot is.