johsti

iTrader: (2)

I'm currently running a full 3" TBE w/ hiflo cat, and a catless uppipe and cobb stage 2. I want to quiet things down to "stock" quiet at the expense of losing some power. I was thinking about using a stock gutted DP with stock 3rd cat, resonator, and muffler. Maybe I'll add an sti axleback.

Does anyone have experience with a gutted stock DP with cobb stage 2?

Thanks

ILiveAgain

iTrader: (1)

what year is your car?

stanh04wrx

I've been running a gutted stock dp on a cobb stage 2 car for just under two years now.

No problems at all.

apexwagon

iTrader: (19)

dont waste money on an sti axleback its the same as an 05 wrx axleback but it says "sti" on it.

johsti

iTrader: (2)

I have an 04.

Is that true, an sti muffler is the same as an 05 muffler? I thought the 05 bottlenecked after the flange just like the 02-04 twin tip mufflers. I know the tips look similar.

laoba

iTrader: (4)

i believe they're the same also, but ive read that it may be chambered differently
i have a prodrive oval exhaust. looks very stock, quiet at cruise but makes itself known when you get on it i bought mine used for $250

johsti

iTrader: (2)

I used to have an oval tipped Scorpion. Exactly the same as the Prodrive oval except it had a scorpion on the tip. I agree, it's very quiet for an aftermarket exhaust, but I'm looking for "stock" quiet.

I just bought a used Stromung DW DP instead of the gutted stock DP. I'm thinking the new setup will be sti UP, Stromung DP and stock 3rd/resonator/axleback. I know I'll be leaving some power on the table, but it will be very quiet, and I'll have at least one cat (I won't go catless). Maybe later I'll add a Stromung hi/flo 3rd cat later.

johsti

iTrader: (2)

The pipes are the same size at the flange on the 02-05 wrx muffler and the STI muffler. However, if you look right past the flange, the wrx mufflers taper down about .25". The STI muffler does not taper right after the flange.