Hi my turbo kicks in at about 3500/4000 rpm thi sseems to late to me as as soon as it kicks in i have 2 change gear is there a way 2 lower this without a custom remap?[i have full decat my 96 wrx].I have a m8 who has a my 95 wrx with decat and his kicks in at 3000 rpm why is this?

 

I also have an my95 wrx and my turbo kicks in at around 3000-3500 rpm.