SoreHead

Strange one this but a few weeks after fitting the PPP to my MY01 I noticed it was getting quieter? I thought I might be going mad
so I waited until a neighbour got an identical car and had the PPP fitted. I'm now positive my sanity is in check (ok that's probably getting carried away)

We parked them side by side and left them ticking over and there is definitely a noticable difference in the noise level. Mine was as loud when I got it first.

Is this normal? Will his quieten down with time or should I head back to the nice man at Subaru to get something checked?

Practos

iTrader: (2)

all exhausts get quieter after they are run in, take a look inside the pipe -its black right ? used to be shiny right ?

...and thats way we buy Hks and Blitz because they sound like hell even after they are smoked !

nom

...or they get noisier as the packing degrades (if that type) or gets blocked. So they get noisier & work better (at getting the exhaust out, anyway )

SoreHead

Aha. Thanks for that. At least it'll save me the trip to subaru now.

My Scoobysport up and downpipe should fix the problem (??) a bit

Just need to put the last month behind me and get to saving the installation money again.

Big Goon

Dont forget to change the center section too, the resonator dampens out most of the boxer throb.

SoreHead

huh???
I though this was all the bits? I have the PPP whic is 2 section and now I have the up and downpipe. How many sections does the exhaust have????

nom

All exhaust parts:
manifold, up, [turbo], down, mid, back.
MY01+ has cat in up down & mid
MY00- has cat in down & mid. PPP removes mid.

SoreHead

Well then I'm sorted.
I have the PPP installed already so back and centre are sorted.
I have the Up and Downpipes sitting in my shed so once they're fitted that's the lot sorted.

A question though. I use the car for sales calls and visits to partners etc. It's fine on the noise front now. Will the back box be enough to keep it all civilised if I have the Up/Downpipes fitted or will it be completely obnoxious?

When answering try to forget that you like mad noise and think of it from a normal human being point of view. Come to think of it I'm asking the wrong people then

nom

Normal people? Who are they?
PPP BB - as long as you're not driving like a nut - is still pretty quiet with the DP replaced (I don't think the up-pipe makes a difference). Change the BB to a noisier one - ScoobySport, for example, and it is noisier at idle, but not so as to have people scowling. That only happens when you're having fun

SoreHead

I believe the uppipe makes a difference on the MY01 as it gets rid of a CAT. I'll leave the prodrive backbox and all should be well.

(I hope)