whakiewes

I am sure when Kell gets around to checking the boards, he will post about his 4" setup. Its custom built, 3" downpipe to 4" exhaust, one Magnaflow 4" muffler. Wastegate is dumped into the atmostphere. There is no way around it....the car is loud. Its louder than a built 3.8L 964 turning 8000rpms with no mufflers. The car is bearable until the wastegate opens, then you might as well not even worry about talking to anything, yourself included. When I get out of the car, my hearing is literally muted for a couple of minutes. If you in any echoing area, on the passenger side, when the wastegate opens, you won't be hearing for a matter of minutes.

The upsides - you hear everything, turbo included. The engine sounds great, not ricey at all. The best part is riding behind the car and seeing the 4" piping. It just spells badass. I think there would be a noticable gain in power. Car shoots flames consistantly now. You don't have to worry about hearing Honda's and Acura's...you drone them out with ease!

Wes

RKD in OKC

Sounds like it is loud enough to do permanent hearing damage.

With the LR 4 inch and Flowmaster ie 126 db, I got pulled over because an officer heard the car 3 blocks away and came and got me.

With MagnaFlow ie 96 db, no more hassles from The Man.

porshhhh951

+1 now that I got the magnaflow I haven't had any problems with cops. And its a 4inch system I can live with.

sayporsha

OK, I'm keeping the Magnaflow!

Any clips of the system with vs. without the Outlaw pre-muffler?

RKD in OKC

I don't have a sound clip, but I helped Dave Lindsey do the db sound level test when he installed the cat muffler on his car with 4 inch and MagnaFlow. It was 5 db quieter and seemed to take just a little of the raspy/metal sound out, but not so much that it sounded different.

toddk911

As I have heard from some of the big dogs in here, the backpressure is in the head and headers, not so much the exhaust; assuming you ahve already got the cat out and or 3".

If you have upgraded your head and headers, then yes I would say go with 4 or 5". But silly to go that big on exhaust if you still have stock head and headers.

toddk911

So by dumping my wg to atm saved me how much $$$$ ????

That statement by Dave also proves there is a performance difference by dumping wg and not tieing it back into the exhaust.

RKD in OKC

Let's see...a 4 inch exhaust doesn't add power, yet dumping the wastegate does? Oh, I give up.

toddk911

My point was that it is a hell of a lot cheaper to just cut the wg dump to atm then a 4", if the gains that were seen were mostly due to wg tied back into exhaust.

I agree a 4" or 5" might make more power, but one should probably consider getting the stock choking piece out first (head) before a 4 or 5" exhaust.

Duke

Absolutely, but the noise is too much for most street car users and you would get black flagged on pretty much all track events, at least in Europe.

Plus I don't think the yearly inspection would be impressed with exhaust piping existing under the car.