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View Full Version : Custom exhaust, good idea?



tnrknght
10-12-2012, 03:52 PM
Now I know everyones a critic.... I like ebay products depending on what Im buying. That being said, I was looking at a couple ideas reguarding exhaust components.

I know that Im not going to find a set of aftermarket headers for the 2.2, I keep seeing the dual ports for the 2.5... after the oem exhaust manifolds you have the front cat, rear cat, intermediate pipe with resonator to the muffler. Im thinking for a single exhaust setup, having the muffler piping loosely bent (less restriction) where the factory cat converters would be, and once its at the poper angle for a straight shot to the next hanger, install a single universal cat converter, not a test pipe but just a straight cat converter. From there more pipe from the converter to the muffler. Essentially just a simpler idea of stock. Looking at the prices to replace all the components with oe replacement isnt gonna be cheap, and most of my exhaust is in need of replacing.

I also considered going with a dual exhaust setup. On ebay there is a cat converter with a single inlet and dual outlet. from there I can run the two catbacks again keeping the bends as clean and unrestricting as possible, to their respective mufflers. Of course this would be a more outgoing idea for the exhaust, and I do want to keep things simple but it was a theory that I decided to throw out there.

essential parts:
Magnaflow Catalytic Converter (http://www.ebay.com/itm/2-25-Magnaflow-Universal-Catalytic-Cat-Converter-94105-New-Same-Day-Shipping-/110861226699?pt=Motors_Car_Truck_Parts_Accessories&hash=item19cfd812cb&vxp=mtr)
Twin Loop Muffler (http://www.ebay.com/itm/TWIN-LOOP-2-5-INLET-M-POWER-AXLE-BACK-STAINLESS-STEEL-DEEP-SOUND-MUFFLER-EXHAUST-/370664455941?pt=Motors_Car_Truck_Parts_Accessories&hash=item564d52bf05&vxp=mtr)
Dual Outlet Cat (http://www.ebay.com/itm/Magnaflow-Universal-Catalytic-Converter-Cat-2-5-2-S-D-FED-94007-/180858702042?pt=Motors_Car_Truck_Parts_Accessories&hash=item2a1c04c8da&vxp=mtr)

Now as far as the twin loop muffler goes, I know people are reading this thinking "RICE!!!! RICE!!!! RICE!!!!" But as can be seen here (http://www.youtube.com/watch?v=SpJGu5pwJ58) the twin loop doesnt sound bad at all. That was with aftermarket headers.

Essentially I want to have a decent sounding, decently breathing exhaust and if I can make it for less than buying bolt-ons, then Im happy. Does this sound like a potential upgrade or just stick with stock?

Huffer
10-12-2012, 04:01 PM
There's a fella over on RS25.com that makes the single port headers... and I believe our own Reason was looking into getting a few sets made up.

To make a nice, decent sounding and well flowing exhaust, you only need to expand the midpipe to around 2.25" - no bigger. Then add on your own muffler of choice depending on the sound you want.

The cats aren't actually that restrictive once they get hot, and IIRC, the O2 sensors are only installed pre and post cat 1. Cat 2 is not needed for emissions.

MonstarMotorsports
10-12-2012, 05:41 PM
i have a guy local to me as well that makes a beautiful set of single ports. I think he charges 225ish for them + shipping. I'll email ya a name if your interested.