JayUK91

A little backstory. This is the original Prodrive exhaust recently removed from my Blob STi PPP. Upon taking the exhaust off the car, and cleaning it up a little, I was greeted with this:





A nice big hole and an attempt to cover it up!

So being the inquisitive fella I am, I had to take the plate off and take a peek inside (after stripping every screw head and resorting to blunt force):







Just a single, perforated pipe.

Now I'm not a technical guy, but I can only assume that perhaps there was once a packing material in here to help muffle the sound?

So this got me thinking. For a bit of fun, now that there's a gaping hole in my spare backbox, is there any way I can try to alter the sound?

Just a couple of ideas:

• Sleeve the perforated inner pipe with a sheet of aluminium, clamp it on and effectively have a 'straight through' backbox?
• Tightly pack the chamber with material and have a makeshift 'Glasspack' exhaust?

Would this make any difference at all? I'm thinking not much - but is it something worth trying?

XDevil666

Buy some exaust turbo whistles and put a few in there, would be good to see how it sounds lol

http://m.ebay.co.uk/itm/131103369294?nav=SEARCH

jaygsi

iTrader: (46)

Hmmm, interesting, wouldn't bother with straight threw.

If you covered up some of the holes may give a deeper sound

Turbotits

iTrader: (2)

I think that box has been cut open and had the sound deadening removed. So no a true likeness of the inside of a prodrive box.

jazzyjembreaze

iTrader: (11)

Wadding

JayUK91

Oh god, I don't think I could bring myself to do it.

Is that a fact? I'm trying to visualise how the muffler chamber alters the sound but I'm clueless.

I bought and fitted a TSL Group N backbox to my car to replace this, but at the moment I'm a little disappointed with it. This is more than likely because this Prodrive exhaust was already louder than it was supposed to be with the wadding material removed.

53

iTrader: (41)

That is proper pikey lol

JayUK91

Tell me about it, I was gutted when I took it off the car - was hoping to sell it on, but no chance of that!

Rusti

iTrader: (4)

Oh dear! that is a gash job.