O2 eliminator Setup and Install info

[hopwoodp]

Okay,

I have a 95 gsx w/ evo3 turbo, apex'i N1 cat back, New sbr exhaust manifold and everything else is stock for exhaust.

I want to replace my stock O2 housing, DP, and cat to a higher flowing setup.
I live in southern cali so, I cannot do the test pipe or open dump O2 thing. Yeah, it sucks.

But, what I need to know are the various setups that people have for the DSM's andwhat they had to do for install and how they made it work. I have been researching this for soming time but, it doesn't seem to common for some reason.

My goal is to go as sleeper as possible (Cops are getting much smarter down here) while still boosting performance. I plan to "hide" my exhaust setup all the way to my cat with thermo wrap, heat blankets and heat shields depending on the area...

If there is anything anyone can say about this please post it.

Something else I forgot to add was the fitment of yur setups if you can include them. For instance, If I get a vrs 2.5" O2 elimiator downpipe and a high flow cat will it bolt right up to my cat back or will I have to get some additional pieces for proper fitment.

 

[doug]

I have the RnR Racing O2 eliminator. The lower heat shield won't fit around it, so you'd have to fabricate something yourself if you're determined to keep it hidden. Since you're right there in RnR's back yard (I used to be, too), maybe just take a ride out to their shop and discuss some options with them.

 

[hopwoodp]

I have the RnR Racing O2 eliminator. The lower heat shield won't fit around it, so you'd have to fabricate something yourself if you're determined to keep it hidden. Since you're right there in RnR's back yard (I used to be, too), maybe just take a ride out to their shop and discuss some options with them.

Was the rnr install pretty easy or did you have to jerry rig some stuff for it to fit right? Some people I have talked to before about this said that it wasn't a direct fit. Also, what changed since you added this to your car?

 

[doug]

Actually, Ryan (owner of RnR) installed the exhaust himself at his shop (I was living in Poway at the time). Mine was the first (or one of the first) of the 2G FWD systems he had done and he wanted to make sure fitment was right. So for me, the install was a breeze.

I'm not sure what you mean by what changed since it was added. If you mean did I notice a difference, the answer is not much. But my butt dyno sucks pretty bad-- Ryan said I should see a 10-15 HP difference. It's more of a cumulative thing, though-- a mod here, a mod there, and they all add up.

 

[CanadianTSi]

My RNR 3" o2 eliminator exhaust bolts right no with no modifications, although it is a little tricky.

 

[hopwoodp]

Thanks guys, I'll give it a shot when I get the dough. Now, I am debating if I should get the 3" O2 eliminator or 2.5". I already have a 3" apex catback.

 

[doug]

2.5" is fine, plus it will be a little easier to "hide" if you're trying to keep the smog nazis away.

 

[hopwoodp]

2.5" is fine, plus it will be a little easier to "hide" if you're trying to keep the smog nazis away.

Yeah, your right. That is one thing that sucks about so cal. I am planning on putting heat wrap on it all the way down to the cat. Hopefully this will help alittle bit more. I also plan on putting some heat shielding on it as well. I got a buddy that works at metal shop next me to that said he would hook me up. Thanks for the help.

 

[Eastwood95]

Heat wrap all the way from the o2 housing to the cat? Thats gonna cost freakin arm and a leg. Unless you got some sort of miracle hook up on the stuff.

 

[hopwoodp]

Heat wrap all the way from the o2 housing to the cat? Thats gonna cost freakin arm and a leg. Unless you got some sort of miracle hook up on the stuff.

Well, thats what friends are for, right? If you do enough favors for someone else, they might just help you out when you need it. Lets just say I got the right job for those kind of connections. Esp. if you build aircraft engines and test them.

 

[hopwoodp]

Hey, who has this setup ( o2 eliminator) with a high flow cat? I am thinking of a straight up 3" turbo back. I got my "NEW SBR" exhaust manifold + porting- it looks hot!! But, yeah if anyone has any positive input on high flow cats let me know.

 

[hopwoodp]

OK, here is a good question for you guys. What is the difference between a high flow cat an a resonator test pipe? For some reason I am under the impression that a high flow cat is larger but still has the honeycomb in it but, the resonator doesn't. Please correct me if I am wrong.

 

[doug]

That is correct. In CA, you will need a cat to pass emissions.

 

[GPTourer]

I have a 3" O2 Eliminator and Apex'i N-1 on my GS-T. I had to fab up a 3" cat because the removable neckdown leaves a gap where most DP's leave off, but it is no big deal.

I am interested in a RNR TBE for my 1G, but I do not know if I want to go with the eliminator, or just dp/cat back setup because I want a external WG on manifold from the start, but no atmos. dump. I will need some sort of custom o2 setup for a tial.

 

[hopwoodp]

That is correct. In CA, you will need a cat to pass emissions.

Right. But, does a resonator test pipe work the same way? I went to road race a year ago and they showed me a high flow cat but, it was hollow with a honeycomb inner shell inside. It had the same weight and heatshield design. Now, when I look at other "high flow" cats , they look just light a regular cat with larger inlets/outlets. So, would the cat that rre sells be a resonator test pipe or a completely different style cat?

 

[doug]

A "resonator" test pipe doesn't filter out any emissions stuff like a catalytic converter does-- a resonator is basically just a small muffler. I can't speak for what you saw at RRE, but to be safe just go with what is for sure a catalytic converter, high flow or otherwise (high flow is better, obviously).

 

[hopwoodp]

A "resonator" test pipe doesn't filter out any emissions stuff like a catalytic converter does-- a resonator is basically just a small muffler. I can't speak for what you saw at RRE, but to be safe just go with what is for sure a catalytic converter, high flow or otherwise (high flow is better, obviously).

Thats exactly what i'm thinking. thanks for the input

 

[flinguist]

I have the RnR Racing O2 eliminator. The lower heat shield won't fit around it, so you'd have to fabricate something yourself if you're determined to keep it hidden. Since you're right there in RnR's back yard (I used to be, too), maybe just take a ride out to their shop and discuss some options with them.

You can fit the lower heat shield on with a little cutting.

 

[hopwoodp]

Does anyone know what High flow cats are better than others for emissions testing? Do different styles make a difference ( ie, shell substrate vs. honey combs)? I am trying to go full 3" exhaust but, being that so cal is going over the edge I am trying to do this a little smarter. Any input will help.

 

[Omega]

You won't fool anyone by wrapping the pipes. Just paint them black and call it a day. Thermo wrap holds moisture, it does a great job of helping the rust process. If you really want to be sneaky about it, try and use your OEM muffler. Perhaps gut it and use resonators in the straight section instead.

Just buy a Catco cat, they are cheap and work well. Tuning has more of an effect on your emissions than an exhaust... assuming you have a cat.

 

[hopwoodp]

The thermo wrap isn't really to fool anyone in my opinion. I am just trying to keep under hood temps low while keeping a high heat velocity at the 1st exhaust bend off the o2 housing.

Now, for the cats, I talked to road race the other day and the cat that I was refering to earlier was the rally cat for off road use only. They sell another one for streat apps.

I plan to go with a setup that rre sells. I love there shop and they are very friendly besides, they are only an hour away.