K-Constants & TTP Min/Max Values

Nistune topics specific to the 6802 cpu

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1SIKZ31
 

Posts: 79
Joined: Thu May 24, 2007 4:15 pm
Location: Dallas, TX

K-Constants & TTP Min/Max Values

Post by 1SIKZ31 »

I understand that when you adjust the K-Constant, you have to adjust TTP Min and Max values by the same amount.
For Example (To make sure im correct)...
If The K-Constant is 500, and gets bumped down to 250, the TTP Min and Max Values have to be bumped down half of what they were before.
Now on "Injector Resize" Nistune has a Box that automatically does this for you when adjusting to a diffrent sized injector...
But the thing is, what if "after" I did the resize, and had to change the K-Constant again from what Nistune set it at, will Nistune automatically change the TTP Min and Max as well, or is this something that I would have to calculate with a calculator and find out how many Percent i changed the value from what it originally was before and factor that in to get a new TTP Min and Max.
Thanks!

Im just a little confused... hope I explained it correctly. :?
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ByReaL
 

Posts: 127
Joined: Fri Mar 23, 2007 11:46 pm
Location: Romania / SUA
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Post by ByReaL »

I played with TTP min/max values a lot, and only when i turned one of them to 255 or 0 or something like that the engine stalled, but for the rest i did not noticed any difference.

if someone knows better what they do, how they affect the engine and for witch rev range... will be good to know

CA18DET engine


from what i understood this values are used to keep the injector pulses in a certain range without allowing them to "give more fuel" them ttp max or less then ttp min something like in the picture attached

or anyway if someone knows how they work and at what they are used please share with us (me)
Attachments
TTP_min_max.JPG
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* Got CA18DET Love
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