So I need build a new exhaust system for my 200 20v. Here's what I'm thinking chop the stock DP and re-work it into a single pipe add a flex coupling at the base of it. To that I would add a 2 bolt flange. Next a magnaflow cat> piping>a round mangaflow muffler>more piping>mangnaflow muffler with some nice tips. Any thoughts on what size to go with the stock system is what 2.25?
yodasfro
If you need a 3B DP to do this to so your car isn't down you can have the one I have,
then you can just give me the one on your car.
Let me know.
then you can just give me the one on your car.
Let me know.
I still have that URS4 DP the car will have to be down for a bit anyhow. I figure I should do something about the exhaust before my emissions letter shows up in the mail. 
go 2.5 it fits and nets you some more flow... as far as the cat, go as big as possible with the 2.5 piping cats will allow, and mufflers, well i like the magnaflow stuff but to each their own
I ran a 3" on my 200. If you aren't going all out, I'd definitely go 2.5". It's easier to package. If you don't want something too loud, go with the offset inlet/outlet cans for more muffling. I'm running the smallest straight through muffler they sell with no resonator and no cat. It's loud, like your girlfriend won't ride in the car loud.
Yeah I have no reason to go 3" Plus doing that requires a 3"DP which I can't afford.
Now I'm looking at magnaflow cats one is 13" in length and the other is 16" I'm assuming the longer one would be better?
Now I'm looking at magnaflow cats one is 13" in length and the other is 16" I'm assuming the longer one would be better?
The longer one will have worse flow characteristics, but not by much. I'd just get the little one and be done with it. Both are significantly better than what was available in 1991 and is worn out now anyway.
Ok hmm I might do something like what was on the EVO killer. A 4.2 center section so I don't have to spend the money on new mufflers right away.
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Well I bought a cat off of ebay $65 shipped ain't bad if you ask me. I also ordered 2 2 bolt flanges. Now I need to figure out what size flex coupler to get?
I had a 3" on mine...stock DP till1/2 way down then up to 2.5 for the bend, then up to 3" to a magnaflow muffler....i have a vid on youtube of me doing donuts in it....it was a bit loud, but not to bad
no im saying go with the biggest case size of cat that you can find with 2.5 inch piping on it. its not really easy when you arent ordering from generic parts... seems all replacement cats go with that smaller case size or something...the_natrix said:
basically what was said already, wider the cat the more the flow, but avoid longer as that just increases the restriction.
if you can get a catalog of cats and see what you can find.
Remember when me you (Austin) & Keith were checking out the system & he showed us the big dent in that DP on the EKq?!
Wasn't that dent caused by the Rs2 Comp impeller exploding?? Can't remember...Keith sure spins a good thread :lol:
So are you after a 4.2 center section?
Wasn't that dent caused by the Rs2 Comp impeller exploding?? Can't remember...Keith sure spins a good thread :lol:
So are you after a 4.2 center section?
Yeah I may just be after a 4.2 center section hurry up and go get Emy's car already. Yup the dent was from the rs2 comp.
Yup the dent was from the rs2 comp.
If you are shooting for good emissions, you want the cat as close as possible to the engine. It relies on heat to get it going.
Yeah the cat will go in the stock location. So what length flex coupler should I get for the DP?
On my 200 I have the flex coupler in the end of the downpipe before it does a 90 and heads under the half shaft. It doesn't matter where you put it really. Get one that's 6" long and install wherever creates the least grief up towards the front.
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