On a dyno..you should see about 14 HP over stock..but what you will notus.. Most is how loud your car is on cold starts..and with the mods you will see a stronger top end over the stock intake..and the resonator delete will smooth out your mids...and you will hear some mad turbo spool.. But the intake sound is not for everyone.. Its not the most enjoyable sound but I like it.. But you won't see real gains till you get your tune..but you are on the rite track