I'm looking for those who have any experience with the Jmod or has any knowledge of it. The more and more I read, the more I see people saying that increasing line pressure in the 4R70W is a risk, especially on higher-HP cars. A tune only really increases line pressure while something like the Jmod achieves its firmer shifts in other ways. Im more interested in the durability aspect of the Jmod (increased/faster fluid transfer, heat dissipation, and elimination of shift overlap and wear). How does the Jmod perform under both part throttle and WOT? How many actuator springs were removed? Stated per TCCoA articles, they call for all springs to be removed. Any input is appreciated.