Realise most have been posted before (though scattered), yet most links are dead.
Despite the spectacular titles, these books are of marginal value to the diesel tuner as very much petrol/"gas" motor oriented & lacking depth.
While most are PDF files, there is a few in mobipocket e-book format (.mobi). Off the various mobi readers available can recommend Calibre (free & open source).
Engine Management Advanced Tuning (Greg Banish)https://www.sugarsync.com/pf/D8700125_05791262_680566?directDownload=true (139MB)
Haynes Definitive Guide To Car Performance (32MB)
How to Tune and Modify Automotive Engine Management Systems (Hartmann) (51MB)
Maximum Boost - Designing, Testing and Installing Turbocharged Systems (Corky Bell) (25MB)
Modern Engine Tuning (Graham Bell) (54MB)
Supercharging, Turbocharging & Nitrous Oxide Perfomance Handbook (Earl Davis) (203MB)
Turbochargers (Hugh MacInnes) (34MB)
Designing and Tuning High-Performance Fuel Injection Systems (Greg Banish) (27MB)
Performance Automotive Engine Math (Baechtel) (20MB)
Turbo Real World High-Performance Turbocharger Systems (Jay Miller) (26MB)
all bookshttps://www.ecuedit.com/performance-tuning-turbocharging-supercharging-books-t8807