Graber I3 Titan Aero Upgrade - Layer problem

Hello Guys,

I have a Graber I3 (Prusa clone) with ramps 1.4 which I upgraded to use Titan Aero and BLTouch.

After upgrading I was not able to extrude the 100mm, so I had to raise the stepper voltage to 1.0v. Then I got the proper 100mm extrusion.

Now when I try to print, I see that the layers are not sticking to each other, it seems that the upper layer extrusion is to far from the previous layer printed.

Here is a example of what is happening
[drive.google.com]

I'm using ABS as filament for this tests

My printer settings are:

#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80, 80, 4000, 837 }
#define DEFAULT_MAX_FEEDRATE          { 500, 500, 2, 45 }
#define DEFAULT_MAX_ACCELERATION      { 3000, 3000, 15, 2000 }
#define DEFAULT_ACCELERATION          1200    // X, Y, Z and E acceleration for printing moves
#define DEFAULT_RETRACT_ACCELERATION  1200    // E acceleration for retracts
#define DEFAULT_TRAVEL_ACCELERATION   1200    // X, Y, Z acceleration for travel (non printing) moves
#define DEFAULT_XJERK                 10.0
#define DEFAULT_YJERK                 10.0
#define DEFAULT_ZJERK                  0.4
#define DEFAULT_EJERK                  5.0

My S3d settings are:

Nozzle Diameter: 0,4
Extrusion Multiplier: 1,00
Extrusion Width: 0,4

Retraction Distance: 1,5mm
Reatraction Speed: 1800,0 mm/min

Extruder Temperature: 240
Bed Temp: 100

Default Print Speed: 1700,0 mm/min
Outline underspeed: 40%
Solid Infill Underspeed: 70%
Support Structure Underspeed: 90%
X/Y Axis Movement Speed: 4800 mm/min
Z Axis Movement: 1000 mm/min

I'm using the same speed settings from the previous extruder that was working properly. Do you have any clue of what is going on?

Edited 1 time(s). Last edit at 07/22/2018 09:19AM by raphaelgatti.

I did a video to show what is happening.
I noticed that after 3 layers things are getting strange, layers are not sticking and the Z axis seams a little bit higher than it should be.

Here is a video of the problem
[www.youtube.com]

I found the problem, it was Z Axis step calibration.

I was working with the 4000 value, and now it is 1500.

Thank you guys