CHRISPY

It looks like I am going to be forced to run cats on the car so I was thinking of the following (Just tossing the idea around for now)
I have my upper PHR removed

1) 1 3/4 to 1 7/8th headers with 3.5 merge collectors and 3.5 to 3 inch cone reducer
2) Dual carsound 3 inch highflow cats after the reducers
3) 3 inch pipe from cats Into Mandrel X-Pipe
4) On the pass side leave my over the axle 3 inch dynomax intermediate pipe and cut off the muffler. Run that side straight back with 3.5 inch chromed slashed tip
5) On the drivers side run a custom mandrel bent over axle pipe exiting straight back also with a 3.5 inch chromed slashed tip

The cats will act as my mufflers and the Xpipe and duals should sound pretty mean. (No mufflers on the car)

With this setup I wouldn't need cutouts either which is nice

What do you think? I think it would be easy and cheap to do. Be high flowing and emissions legal.

zchgla

im sure it would sound wicked, i like the idea

blkZ28spt

You do realize that technically that is not emissions legal, right? Or were you referring to shorties? With mid/longtubes the cats aren't where they are suppose to be. If you have to pass a visual that could be a problem. Do you only have to pass a sniffer?
emissions

CHRISPY

I am not in california. The cats and emissions equipment need to be on the cat but do not need to be in the stock location.

99CamaroSS_

might as well just run straight 3.5 inch pipe all the way back from the headers wit no cats no mufflers.

steelsnow

uhh, good idea? i think thats a pretty crazy setup you got thought up. if you infact do go through with it, we need pics!

deviate42

iTrader: (2)

i would use some nice mufflers instead of cats. It will give it more of a tuned sound. IMO the systems if have heard with just cats dont sound too great

my .02

edit: my bad, didnt read the smog part

blkZ28spt

Do they just not care that much where you are, unlike the smog nazzis.....err California? I wonder, because it is federal law about the cats not state.......then again I can pass emissions here without AIR/EGR/Cats

deviate42

iTrader: (2)

from what i see, the "visual" seems to be only inforced in Cali

V8_DSM_V8again

I'd check random tech for this cat because carsound only makes this in 2.5... I know I saw a dual 3" in and out high flow cat that was trick.. Should be able to pull double duty as an x pipe.


See how close your intermediate pipe is to working on the other side too... If so just get an extra and mod it a bit or atleast something to go off of for that side....



Consider this muffler...Magnaflow 12469
Same dimensions as the f-bod muffler but dual 3" straight thru. All the pipes from the right side of your dynomax system should line up.

Muffler pipes when horizontal like the picture.

1----------2
3----------4

Looking at the rear...

Because the dynomax overaxle connects on the right rear muffler tube (4)you will have to shorten the left spout in its straight a way to connect it to the other end of the rear tube on the left.. Move the left spout from 1 to 3 and shorten so it matches the bumper. Now the right side from header has a muffler and tip.. Connect the new 2nd overaxle to the left front tube (1). Your d-max right tip should clamp right on (2) since that has'nt changed.. Left side at the header dual exits the right spout and the right exits left...

The only changes are on the left side of the muffler... Put the tailpipe on the outlet closest to the bumper than connect the new overaxle in front of it...

Look at the dynomax diagram here and it should help.

http://www.dynomax.com/documents/pas...ral_motors.pdf

True duals to fool fools because it looks just like a dynomax system from the rear.

kpowr82

iTrader: (9)

plus the guy is in Kinadia, eh.

steelsnow

i dont think the mufflers are going to act as cats to well. expecally if he needs to pass some kind of emissions test. i ran just cats on my car for a while and it was more quiet than running no cats and a muffler. it will work good. might not as flow as well, but still will work.

V8_DSM_V8again

I'm sugesting a cat with dual/dual on each side and a single body..

Then a muffler the same size as the dynomax he already has that can turn the system into true duals just by triming the left tip he has already and adding the left side dual from the engine.

steelsnow

ahh, im sorry. i see what you are talking about now. thats a cool idea.

Eugenio_SS

iTrader: (2)

Have you seen my true-dual @ ARE ?
Why don't you get something like it... it's a 3" true-dual from Lane's.