Barnsleywrx

wanting a bit of advice on whether to get a prodrive backbox or to stick with stsandard on my wrx 05, wanting a bit more rumble on tick ova and low revs but not so much on mways. thanks.

coops78

i've got a prodrive back box on my 02 wrx, it is a very rumbly sounding box and it's not to loud on the motorway, i would recommend getting one

Barnsleywrx

thanks for that mate, cheers.

JimmyBFC

DE-CAT!

that will give a nice rumble

TitaniumDanny

That link above was just a link to a picture from one of many pics to tthe website ????

Whats the website ????

corradoboy

The Prodrive BB is a very good BB giving a nice roar high in the rev range, but a deep burble low down. Slightly increased flow might allow a minor increase in spool-up too. Whilst you're underneath with the spanners I'd consider popping a decat centre on too. They're cheap as they're only a piece of bent pipe, but will liberate some power as flow improves much more.

If you want to go even further then consider decat-ing at the front end, but WRX's have 2 cats up there. A pre-cat in the up-pipe and the usual down-pipe main cat, so you would ideally replace both. If you do the DP or both, I would recommend a remap to get the best out of them and ensure safety, so you can see the cost starting to spiral. You'd need a Samco I/C pipe to cope with the increase in boost too as the plastic one will split in no time.