3inch o2 eliminating downpipe

[nytescion]

I was wondering who still sells one of these I've searched here and googled it and couldn't find anything. If noone still sells one would i be able to just get a dsm o2 flange, cut out the divider and smooth it out and have a pipe fabbed up to it?

Thanks in advance.

 

[TunaTalon]

Hahn Racecraft - Turbo Upgrades and Parts

After installing the HRC eliminator, Hi flow cat, and Thermal Research 3" cat back my Talon pulled up hill in fourth gear like it had in third.

Pretty piece, pretty pricey too.

 

[flinguist]

VRS makes a tubular O2 housing, and downpipe for it. DSM Parts has them.DSMotorsport DSM Exhaust Parts

 

[mikh338]

Slowboy Racing, Inc. :: DSM :: Exhaust :: Exhaust Systems :: Turbo Back :: VRS 1G DSM Turbo Back Exhaust

that link is for a 1g awd, 3 inch turbo back with o2 eliminator...this is what i have but for fwd, i love this exaust so much it sounds amazing

 

[nytescion]

I'm looking for one that doesn't have that seperater in it (between the o2 and exhaust port). I guess i should have stated that. do you think i could cut that out of either of those? i would i be looking at having to have some fab work done?

 

[mitch26753]

when you say o2 eliminator dp do you mean instead of having the piece between the dp and the turbo, the dp will connect right to the compressor housing or what? im just curious

 

[blcknspo0ln]

Think of it as the o2 housing is permanently welded to the downpipe. IMO o2 eliminators are such a PITA and I can't see the performance/convenience reasons for it either

 

[blcknspo0ln]

I'm looking for one that doesn't have that seperater in it (between the o2 and exhaust port). I guess i should have stated that. do you think i could cut that out of either of those? i would i be looking at having to have some fab work done?

Why do you want an o2 housing that has the divider wall eliminated? Every see 2 busy highway lanes and merge into one?

 

[nytescion]

do they not merge anyway...Only real reason i want it like that is because i want the o2 housing to be true 3 inches not 2.5 not 2.75. It was just seeming to me that there isn't one out there because the port on the flange of the o2 housing isn't that big so i was thinking..grind away at it till it was 3 inches *shrug*

This one seems to be 3" but it's also SSAC
Front View
Top View
Flange View

hmm...

 

[TunaTalon]

do they not merge anyway...Only real reason i want it like that is because i want the o2 housing to be true 3 inches not 2.5 not 2.75. It was just seeming to me that there isn't one out there because the port on the flange of the o2 housing isn't that big so i was thinking..grind away at it till it was 3 inches *shrug*

If your goal is simply to have a full 3” connection at the turbo outlet you can weld a 3” pipe to a flange and stick an O2 bung on it some convenient place.

There is no such part on the performance aftermarket because people with performance goals want the lowest possible back pressure at the turbo outlet.

For the lowest back pressure the ports from the turbine outlet and the bypass outlet should be matched exactly by the chambers in the O2 housing. Then those two chambers should be connected smoothly without creating more turbulence and that chamber increased in diameter gradually and smoothly to match the 3” downpipe. Note that this is the way aftermarket O2 housings are made. This is a much more difficult process than just welding on a 3” pipe but worth the effort in faster spool up.

 

[GVR4592]

Blank

 

[nytescion]

If your goal is simply to have a full 3” connection at the turbo outlet you can weld a 3” pipe to a flange and stick an O2 bung on it some convenient place.

There is no such part on the performance aftermarket because people with performance goals want the lowest possible back pressure at the turbo outlet.

For the lowest back pressure the ports from the turbine outlet and the bypass outlet should be matched exactly by the chambers in the O2 housing. Then those two chambers should be connected smoothly without creating more turbulence and that chamber increased in diameter gradually and smoothly to match the 3” downpipe. Note that this is the way aftermarket O2 housings are made. This is a much more difficult process than just welding on a 3” pipe but worth the effort in faster spool up.

ok this is what i was looking for as explanation on if it would work.

I guess I'll settle for the ssac or one of the vband units...

 

[mitch26753]

ok i still really didn't get a answer! i cant find a picture of a o2 eliminating dp. so what i want to know is what is is? on the stock set up, you have the turbo, that bolts to the o2 housing, then you have the downpipe. so with the o2 elimantor downpipe does the turbo outlet, weather being a 5 bolt, v- band, 4 bolt, connect directly to the downpipe? does anyone have a picture

 

[romeen]

ok i still really didn't get a answer! i cant find a picture of a o2 eliminating dp. so what i want to know is what is is? on the stock set up, you have the turbo, that bolts to the o2 housing, then you have the downpipe. so with the o2 elimantor downpipe does the turbo outlet, weather being a 5 bolt, v- band, 4 bolt, connect directly to the downpipe? does anyone have a picture

Yes, as the name implies, an O2 eliminating DP does away with the O2 sensor housing altogether. The turbo end of the DP is flanged to bolt up directly to the turbine housing. If you look at the link that GVR4592 gave above, try to visualize that first item except extending down further to standard DP length and shape.

 

[nytescion]

yeah it's basically goes:

turbo-pipe(with o2 in it)-cat (or testpipe)-catback

I guess. I was just trying to find out if there is one that is a TRUE 3inch setup.

 

[-LA-]

You could go to a muffler shop and have them fix up a 3" pipe for your DP and weld a bung on there for your 02. Alot cheaper than buying one IMO if you truly want a 3" DP

 

[mitch26753]

ok i have searched and no such luck! I would like to see a pic of a o2 iliminating downpipe? Does anyone have any pics?

 

[BigSorn]

DEJON | Powerhouse


it's not true 3 inch, but they do have pics.

hope it helps.

-Adam.

 

[Cs4g63]

If you are still looking for a downpipe with nothing but 3 inch pipe than check this one out. It eliminates the o2 housing and is 3 inch with no neckdowns.
Home
Click on the products section and it will take you right to it.

 

[Gstclipse69]

I had a true 3" o2 eliminator exhaust on my old eclipse. I got it from Rnr Racing and I see they no longer have a website, which is probably a good thing because that thing was a POS. I ordered it and it took them like 10 weeks for my to get it. Thats beside the point but after I got it on, it was so big the oil filter couldn't come off with it on. Fun stuff. Sure you can get oil filter relocation kits and I've heard that an oil filter off an evo might work but all in all I did not like it. An o2 and downpipe is much easier.