Becker Performance exhaust is the same as the OBX.

I ordered a Becker exhaust and it came in an OBX box.

Keep in mind that the cheaper options do not come with a catalytic converter, it's just a straight pipe.

http://www.k-jet.org/2013/06/volvo-850-exhausts-oem-vs-obx-vs-ipd-vs-eurosport/

 

Wouldn't running a straight pipe throw a CEL? Or is it just loud? I know it's a dumb question

 

Yes it does. You have to have a custom computer that can handle running with no cat. Otherwise, you get a CEL and the computer will it run super rich.

When I had the OBX exhaust on my 850 turbo, I had a CEL and it was running super rich, like warren buffet rich. Black smoke all the time. Running this way will eventually damage your rear oxygen sensor (crust it over) but it takes a while. You'll also get a black soot stain on your rear bumper.

 

I need something that doesn't drone on the highway. The setup on it now drones like crazy and now ipd is out of stock on ther exhaust for 90+ days

 

Well, the IPD does drone on the highway. Less than the OBX exhaust, but louder than the quiet-as-a-mouse stock exhaust. I took my 850 on a 3000 mile road trip to the Grand Canyon with the IPD exhaust on it, and it wasn't that bad. But different people are sensitive to different frequencies etc. If you want a real quiet performance exhaust, get the IPD exhaust, get it put on the car, and then have an exhaust shop add a stainless muffler in the middle where the stock 850 muffler is.

Question, why would you run super rich without a cat? Isn't only the upstream O2 sensor used for AFR control? I thought the downstream's only purpose was to monitor cat health and throw an check engine (emissions) code if the cat is kaput. Hence why adding a spacer to the downstream usually gets the O2 sensor out of the flow of exhaust so it only receives a "sniff" and fools check engine lights into thinking the cat is fine.

I don't know much about the science behind it. Might have been related to the tune I was running at the time (I think it was an ARD white tune for M4.3 (I'm now running M4.4/Orange tune), but for whatever reason, once I swapped the OBX for IPD exahust, the engine stopped running rich and the CEL went off. Maybe the CEL puts the computer into a "safety mode" and runs rich to avoid engine damage? I dunno.

For me, the rear O2 spacer didn't help turn off the CEL when I was running the OBX exhaust.

I'd rather have stock and no performance gain than this and the minimal if any gain it's giving me

As far as I know, you should be able to get a stock exhaust at a junkyard from any 1996-98 850/S70/V70 turbo that will bolt right up to your car. Or you could get the exhaust + turbo from a 1999-00 turbo S70/V70, converting your car to an angle flange turbo.

This is what IPD says on their website:

Conical outlet flange
(94-95 850 turbo, 95 850 T5-R)

Straight outlet flange
(96-97 850 R, T5 and GLT, 98 model S70 R, T5, And GLT)

Angled outlet flange
(All cars 99+)

 

Do you know what system is on the car now? Is it just a rusted out stock?

If you are strictly going for sound and not so much performance, a Dynomax VT muffler put in place of the suitcase muffler sounds pretty good. Zero drone, light burble at idle. It's a very civilized but louder than stock option. Muffler like $120 and exhaust shop will do it for probably $40. I've never heard one myself but have done research and OBX will give drone.

Question, why would you run super rich without a cat? Isn't only the upstream O2 sensor used for AFR control? I thought the downstream's only purpose was to monitor cat health and throw an check engine (emissions) code if the cat is kaput. Hence why adding a spacer to the downstream usually gets the O2 sensor out of the flow of exhaust so it only receives a "sniff" and fools check engine lights into thinking the cat is fine.

 

It's a Thrush brand on it currently with terrible crimp bent piping going into it. It's unbearably droning at 70. I'd rather have stock and no performance gain than this and the minimal if any gain it's giving me

 

That is totally incorrect. The front O2 is what the ecu uses to decide fuel enrichment. It has no idea if there is a cat behind it. The rear O2 is purely for the tree huggers. It has no performance or mileage effect. if you are running pig rich, there is another issue.

 

Must have been the tune or a vacuum leak then. I did some other work when I swapped the exhaust for one with a cat, so it was probably that.