In a couple of months I will be Placing an order for a new Impreza WRX.
I went out in a standard one a few weeks back, brilliant but to my surprise there was not the classic rumble noise.
I believe I will have to change the backbox, will just changing the backbox make it rumble or will I need a full system.
Also whats the best System and how much.

 

A BB will give you the rumble no probs! If you want a system (Turbo back) then the choice is endless. Personally, i have a Magnex downpipe and non-resonated centre, with a Scoobyworld Ninja BB
Ninja = £215
Centre = £60 ish
Downpipe = £170 ish

This is one of the cheapest options on the market but you could easily spend 3 times as much on Jap gear if you fancy

 

Thanks. Would the Ninja fit on the original centre pipe and would that be enough to make it rumble.

 

Get a Blitz mate, excellent quality and fantastic sound. Got one on my STI8.
Fitting to the standard system is no probs because we are talking quality product. About £360 ish just for backbox or around £550 ish for the system (front cat back). Had the system on 1998 uk turbo, excellent quality, fitment and sound.
Well worth looking at.
Hope this helps.

 

If you want burble and your warranty intact fit the world rally sport backbox as in the accessory brochure,it's the same pipe you get with the ppp but with an oval outlet.

 

Steveho, the warranty friendly backboxes are not very rumbly, take it from me i`ve just had the ppp fitted to my03 STI8 and its dead quiet so therefore the Blitz is going back on tomorrow.

 

timbow,i've got a wr sport back box on a MYO3 wrx and it's a massive difference to the standard pea shooter ,a lovely sound without it being over the top.