wheelspk

anyone?

hello, im new to this forum, glad i found it. i live in Pakistan, and one of my mates imported a 350GT coupe auto half cut as parts from japan. i was looking through it trying to find some thing usefull for my 350GT and i found a impul hi power control unit in it. searched the internets but could'nt find any thing of importance in English regarding this ECM. so i went on to install it and got the key reprogrammed to it... on my test i found that it relined to 7200RPM and noticed the gears went faster on auto or on semi , there is a noticeable increase in torque, the speed limited is gone, he told me i can have it for 200USD. is it worth buying?? is there a performance increase or is it all in my mind??? coz i did install tomie headers, testpipes and motordyne spacer along with the ECM. please advice should i buy the ECM or not . thanks.