Originally Posted by
jeff jenkins
so does nobody know what the difference between the 528 stock and the 528 mod software? i asked a few days ago and i did a search before hand and couldnt find an answer.

The difference is power.
The 100528 Stock has MORE timing on it. The best way to explain it is install the 100528MOD software on ur 17.5 set up. You will see that it is DOG SLOW. Because a mod motor naturally has more torque and speed, the software for the 100528Mod is much more mildly set up.