RayRay32
15+ Year Contributor
- 112
- 2
- May 15, 2003
-
Orange,
Texas
How to calibrate evoscan to read correct throttle position:
Step 0: Go to the evoscan website and read. But, since we both know you are too lazy, continue to step 1.
Step 1: Right click on the TPS cell and left click edit. Then clear the EVAL formula out, literally highlight it and hit backspace. (Evoscan will tell you it needs something there after you click ok. Just laugh to yourself because you are about to see a fully functional value for TPS.
Step 2: Start the car, start the evoscan log and make a mental note of what the close throttle value is. In my case it was 32. (per evoscan website for those who need a formula, Tc = 32)
Step 3: Turn car off, put the key back in the on position (with the car off) and put your foot down. Make a mental note of what the wide open throttle value is. In my case it was 241. (per evoscan website: T0 = 241)
Step 4: Subtract the two values. In my case 241 - 32 = 209. Remember 209. (per evoscan website: T0 - Tc = D)
Step 5: Put this formula in the EVAL for the TPS cell: ((x-32)/209)*100. (per evoscan website: ((x-Tc)/D)*100)
Yes, it is a basic interpolation ... that's all.
For anyone saying you can't get the correct values from 0 - 100 % ... well now you can and all you had to do was read the manufactures website.
Original Link:
Understanding Vehicle EFI Systems
A thread detailing my adventures with evoscan and ecuflash thus far:
http://www.htown-dsm.com/forum/showthread.php?14870-My-adventures-with-Ecuflash...
Step 0: Go to the evoscan website and read. But, since we both know you are too lazy, continue to step 1.
Step 1: Right click on the TPS cell and left click edit. Then clear the EVAL formula out, literally highlight it and hit backspace. (Evoscan will tell you it needs something there after you click ok. Just laugh to yourself because you are about to see a fully functional value for TPS.
Step 2: Start the car, start the evoscan log and make a mental note of what the close throttle value is. In my case it was 32. (per evoscan website for those who need a formula, Tc = 32)
Step 3: Turn car off, put the key back in the on position (with the car off) and put your foot down. Make a mental note of what the wide open throttle value is. In my case it was 241. (per evoscan website: T0 = 241)
Step 4: Subtract the two values. In my case 241 - 32 = 209. Remember 209. (per evoscan website: T0 - Tc = D)
Step 5: Put this formula in the EVAL for the TPS cell: ((x-32)/209)*100. (per evoscan website: ((x-Tc)/D)*100)
Yes, it is a basic interpolation ... that's all.
For anyone saying you can't get the correct values from 0 - 100 % ... well now you can and all you had to do was read the manufactures website.
Original Link:
Understanding Vehicle EFI Systems
A thread detailing my adventures with evoscan and ecuflash thus far:
http://www.htown-dsm.com/forum/showthread.php?14870-My-adventures-with-Ecuflash...
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