Data logging spikes

[iaff284]

Hey all,

I have just started using HPTuners to tune my dodge diesel. When I first scanned the engine before flashing a tune on it, the data logging was clean with only a weird spike at the beginning and end that I assumed was normal. After writing the tune to the vehicle, every time I data log I get these spikes all over the data that makes it almost unreadable. I am attaching images of the stock before flash log and the post flash log. Thanksinitial scan.PNGscanning spikes.PNG

[Keith@HPTuners]

Post your log.

[iaff284]

here it is

2nd log bucking.hpl

[ElecTech]

I had a similar issue with an 05 Magnum using 3.7.7xx Beta Scanner. I was not able to test subsequent versions of 3.7, but 3.6.26 was clean. I would happen randomly with nearly all of the data being logged. I can upload a scan later today, if desired.

Originally I was thinking I had an electrical issue with the car, but I suspect now it was a scanner issue. I was also having trouble with it polling for all available parameters.

[Keith@HPTuners]

What version of VCM Scanner are you using?

[iaff284]

3.6.26

[iaff284]

I had thought that maybe it was a voltage draw issue, so I double checked that all accessories were off and that the laptop was not charging off the truck but it did not help.

[iaff284]

The other issue is that there is no way to write calibration only in the 3.6.26 version of the tuning software