just put a milltek BB on my 07 WRX ppp. Definately better sound especially when you increase the revs, and quite inside the cabin.

However, it doesnt feel as responsive and i note the outlet pipe is slightly narrower than the prodrive. Is this my imagination??It probably is. Anyone tried both exhausts?

ps. Also just put some new vredestein sessantas on the front. What can i say. mazin

 

Can't imagine milltek being restrictive as used on all the powerstation upgrades, I have had a prodrive backbox but not milltek so can't do a direct comparison,

 

Ive only heard good things so it probably is just me. Just wondered if they did various back boxes and i ve gone and bought one i shouldn't have.

 

those tyres are really great got them all round on my blob and they hold the road like nothing else

 

had a miltek system fitted wednesday on my blob sti to replace the prodrive one i had (ppp) i brought the non resonated cat back, the prodrive had a resonater pipe.
i find it much more responsive now and feels like it has more torque.
i went for the miltek as it looks standard (didnt want a dustbin hanging out the back) and on tickover sounds only slightly louder than prodrive one but on turbo makes a far better noise.
outlet pipe is slightly smaller but the bore of the exhaust is the same as prodrive and outlet pipe makes no difference at all.
miltek do 2 backboxes for the impreza i have both exactly the same apart form the tip one looks like standard exhaust other chav dustbin version, just different tip welded to same backbox

 

ITs jsut got the standard non chav 3.5 inch tip. Just looking for the centre section now!

 

non resonated milltek one i got only about 75 quid

 

Do you still have the standard WRX alloys as I was told they don't do a 215/45/17 vrederstein sessanta or have you changed alloys?

 

got a full 3" turbo back milltek on my my04 blob sti.... slightly louder than ppp system on tickover but sounds fab on full chat !... not ott but as the scoob should sound imo...... looks fairly oe too.... very pleased with it !

 

I changed the alloys to 225/40/18. I dont think vredestein do the 215/45 either

Used to havean STI V with full scoobysport 3 inch exhaust. Sounded great but was a wee bit too loud. Wouldnt mind a new SS back box. dont seem to here people talking about them on here much anymore