today i flashed a 04 evo 8 ralliart edm rom into my standard jdm 01 evo 7 and all is well but when i take my foot off the gas when im boosting at takes ages for the revs to come down compard to the evo 7 map that was in it. what map in the fuel department is causing this?is it the 'open loop throttle low load' map or something like that?any help would be appreciated

 

Why don't you flash your original rom back into your ECU to be sure that it is not a hardware problem, e.g. faulty throttle body?