Pseudo Salafis champion the book “Kitab As-Sunnah” by Imam Abdullah, the son of Imam Ahmed رَحِمَهُ ٱللَّٰهُ and consider this book as a mother of books and a touchstone for establishing the creed of Ahlus Sunnah. They consider the book in the form available today as completely authentic despite the presence of several strange, weak and forged narrations as well as lies attacking the noble Imam Abu Hanifa رَحِمَهُ ٱللَّٰهُ. (For more details, refer http://www.masud.co.uk/ISLAM/nuh/masudq5.htm )
However, what is more unreal is that a faction of Salafis who published this book decided to omit chapters from the book which they do not agree with. See below taken from a famous Salafi website.
If this book cannot be relied to know about Imam Abu Hanifa رَحِمَهُ ٱللَّٰهُ (who lived in Iraq and not in the some remote corner of the earth), then this begs the question of its reliability on far greater matters of creed.
As for the difference of opinion among Salafis on validity of their modern day tampering of this book, bear in mind the righteous Imams of the past consider tampering with the works of scholars as enormous sin only next to tampering with the Quran and Sunnah.
Wahhabism Unveiled 