You can mod Mass Effect 2 on PS3, just like on PC. If you are familliar on modding on PC you would know that you could mod ME2 by editing the Coalesced.ini. It is the same for PS3.

You could edit COALESCED_INT.BIN using Hex Editor. COALESCED_INT.BIN is located to dev_hdd0/game/BL**01133INSTALL/USRDIR/FIOS-UNREALENGINE3/BIOGAME/COOKEDPS3/ once you installed the game.
(**US or ES)

I would not write a tutorial right now, but if you want to try you could search it in google.
However you could only mod COALESCED_INT.BIN by overwriting characters using any Hex Editor. Somehow if you add anything to the COALESCED_INT.BIN the game wouldnt boot.

I have some COALESCED_INT.BIN that I already modded feel free to download and play with it. I recommend that you backup your COALESCED_INT.BIN.

**ME2Mods**
-Fuel capacity 5000/Infinite
-Probes capacity 90
-Infinite Stamina
-Infinite Ammo
-Wepons Mag Size, Rate of Fire, Spare Ammo
-Special Wepons by Upgrading (Not yet tested)
-Squad Power Cooldown Instant
-Power Duration longer
-Faster Scanning Resources and Rotation of Planets

**ME2-Money**
-Credits 9999999

**ME2-Resources**
-Palladium 99999
-Platinum 99999
-Iridium 99999
-Elemet Zero 9999999

**ME2-TalentXPParagonRenegade**
-Give Talent Points 99
-Give XP 99999999999
-Set Paragorn 195700
-Set Renegade 19570
-Set Paragon 0
-Set Renegade 0

Please read the Read Me inside the mods, each mods has diffrent instuctions.
I recommend doing the mods---Money,Resources,TalentXPParagonRenegade---while aboard the Normandy.

**ME2Mods**
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**ME2-Money**
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**ME2-Resources**
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**ME2-TalentXPParagonRenegade**
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Have fun Playing

I see this on PS3ISO after I downloaded the game and searched for it on here but couldn't find it, if this is a re-post then mods don't hesistate to close this thread. This will come in handy for anyone trying to platinum the game which is waht I intend on doing, enjoy.