Quote Originally Posted by robby3 View Post
No, these cars are already awake! I have the BMC filters and if they gave 17hp or so I do not feel them at all. A tune also doesn't do much, it's more the gearbox tune that will change the gears differently/faster, maybe with better rpm matching or a little ritching up during gearshifts. And smooth intake tubes help to have better airstream through the MAF what may gain a few HP.

But what I've seen till today is that you may get about 27hp max out of all together. You cannot simply count the gains together. So if you add new air filters you may see 15hp gain, adding smooth intake pipes then do not add the tested 17hp but only a few then. This due to the fact that an aftermarket filter may already streamline the airflow a little better so the intake tube doesn't help anymore. But that's theory.

The best would be to have a car will all togher on the dyno. I will have my tune soon but leave the Sport exhaust, so I have only filters and tune.
That makes sense.