Okay, so here we again aluigi. Thanks for your reply and work for PGR 4 a moment ago . Now, I already downloaded Race Pro game ( 2009 - Xbox 360 game ), and by using Xbxo creator backup to extract file inside iso. And I found Macau track in .KLUNS format. I know this format already posted by you on another game ( RaceRoom ), so I tried using raceroom_kluns.bms script to extract this .KLUNS file, but I can't because seems this .KLUNS file's compressed .
I upload the file via Mega below. You can try to download it and help me for this one. Hope you can find the algorithm for this .KLUNS file and extract textures inside it. Thank you .
But for the extraction you can't use the raceroom_kluns.bms script because the format is a mess as written in the notes of the script. No support and no further research.
I have no suggestions for extracting the content and even a file ripper is useless because there are no known file formats in it (like png, dds and riff, nothing).
. Now, I already downloaded Race Pro game ( 2009 - Xbox 360 game ), and by using Xbxo creator backup to extract file inside iso. And I found Macau track in .KLUNS format. I know this format already posted by you on another game ( RaceRoom ), so I tried using raceroom_kluns.bms script to extract this .KLUNS file, but I can't because seems this .KLUNS file's compressed 
.
.