First and foremost thank you for becoming a member of our community and purchasing our 389!  

Custom one-of-a-kind Peterbilt 389 MegaPack model by D3D

Brought into American Truck Simulator by Pizzster Modding - DamoATS, Eric Pizzolo

To install the truck, please open your American Truck Simulator folder found in My Documents and then "Mod" folder.  In the zip file you will see 3 .scs files.  
Please select those 3 .scs files and drag them into your "Mod" folder.  

In addition to that, we do have 2 required changes that need to be made before using the truck.  We have a full detailed video that can be found here: https://youtu.be/ftpICMVOBNg
Without following the instructions you will crash every time you go to purchase the 389 at the dealer. 

Or you can also follow the directions below: 



STEP 1!!!!
This is VERY important.  Without this step, you will crash everytime you go to purchase the 389.

Now MAKE SURE YOUR GAME IS CLOSED BEFORE OPENING THIS FILE AND CLOSED BEFORE SAVING THIS FILE, you need to go to your documents folder then American truck simulator 
in there you will see config.cfg or maybe just config(if on windows 11). 

Open this in notepad. Search for "uset r_buffer_page_size" of the config document. there you will see there is a value of 10. Please change the 10 to 30.

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STEP 2!!!!!!
Launch settings can be added by going to steam, right-clicking on American Truck Simulator, you will see properties. Then you should see a blank text input box, 
this is where the launch settings go. There is different variations of launch settings so let's go with these. 
(PLEASE SELECT THE ONE FOR YOUR RAM AND COPY AND PASTE INTO THE EMPTY TEXT BOX, SEE PHOTO FOR EXAMPLE)

8GB RAM:
-mm_pool_size 4096 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog
16GB RAM:
-mm_pool_size 8192 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog
32GB RAM:
-mm_pool_size 16384 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog
64GB RAM:
-mm_pool_size 32768 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog