Torque converter questions??

[Uno99]

My wife has a 2005 Scion TC. After doing some reading on the sire it seem adding a I/H/E does not gain much HP & performance. I was thinking maybe a higher stall converter may help keep the engine in it sweet spot. Anyone ever done this?? Also Im having a hard time finding out what tranny comes in a 2005 TC. What is the model number? Thx

[navylife59]

A quick jaunt thru our search engine deemed the 4-speed electronically controlled automatic transaxle as model U241E as seen here http://www.club-tc.com/forums/tc-kno...-tc-facts.html