Hi there,my 2003 wrx is alot faster than my previous 2001 wrx i had ,now it has a few mods such as exhaust and induction kit but i am told these would not make that much difference with out getting the car re-mapped.....So my question is this....i think the car has been re-mapped,are there any ways to tell if the car has been re-mapped,such as running rough etc..any tell tail signs in daily driving if the car has been re-mapped....please help cheers

 

only real way to be sure was to get a mapper to plug laptop in..

 

You could also take a fare guess by boost pressure you're running at...laptop is the only real way to know for sure as stated.