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Need Help Choosing CAT for my 1997 850 wagon

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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plumsmooth
Posts: 218
Joined: 17 January 2015
Year and Model: V70 Wagon 2004
Location: Johnson Vermont

Need Help Choosing CAT for my 1997 850 wagon

Post by plumsmooth »

I was looking at the whole assembly but my Mechanic said he'd be happy to just splice in a CAT as well.
I was confused about the location of the sensors. Since the Stand alone CAT's say they have to sensor locations?
Are they on the pipes somewhere?

But most importantly there seems to be 2 distinct sizes available 2.25, and 2.5 -- in/out.

Which is the correct one please?

The least expensive Full assembly I can find is around $210; but for 60 bucks I can just get a CAT by itself?

What should I do?

Thanks very much for your time!

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850 LPT
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Year and Model: 96' 850
Location: CT
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Post by 850 LPT »

I just ordered a DEC Cat from FCP for my 05". My indie will install it for me in a couple of days at which point I can give some feedback.

Before I ordered it, he told me to stay away from the really cheap ones (thinking Rockauto here), because they can sometimes cause O2 sensor codes.

My preference would have been a used one from Erie Volvo, but they didn't have one.

There is a member on here (JDS60R I believe) who welds in Magnaflow Cats all the time with good success. With any luck he will read this and chime in.
98' S70, base, 5-speed manual, pewter/ tan, 145k miles
99' S70, base, 5-speed manual, nautic blue/ tan, 225k miles, currently inop
06' V70, auto, willow green/ charcoal, 147k miles
79' Ford Capri S, Euro Spec 2.8 V6, T9 5-speed manual, owned since 1986
58' Porsche Diesel Junior
13' Honda Odyssey :oops:
84' Mercedes 300 D, gold/ tan, 420k miles (retirement project :D )

Herb Goltz
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Year and Model: 04& 06 XC70, '12 s60
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Post by Herb Goltz »

+1 on a weld-in Magnaflow. Even in the expensive greater Toronto area you can get one done for about $200 USD parts and labor.
2012 s60 t5
2006 XC70
2004 XC70

plumsmooth
Posts: 218
Joined: 17 January 2015
Year and Model: V70 Wagon 2004
Location: Johnson Vermont

Post by plumsmooth »

I think the answer on sizing is 2.25. I think the listing I was looking at for the one measuring 2.5 was a mistake.

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