O2 sensor spacer project... not so good. What now?
#1
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Thanks to the good advice from everyone here, I tried to install the following O2 sensor spacers into the allroad...
<a href="http://www.mcpii.com/engine.html">Oxygen Sensor Spacer</a>
...but there just is not any room to install them without seriously modifying (ie: removing and cutting away) the down pipe/cat shield to allow them to thread in. This is simply beyond my capabilities.
OK, so the least expensive route did not work, guess I am back to replacing the cats at the dealer ($$$) or getting after-market down pipes? If the latter, who makes any for the allroad? It is a 2.7t engine.
What about these?
<a href="http://vastperformance.com/shop/product_info.php?cPath=22&products_id=65">VAST "PIGGIE" Turbo Downpipes</a>
Or these?
<a href="http://www.tantrumwerks.com/html/27exhaust.html">Tantrumwerks Exhaust for the Audi 2.7T</a>
<a href="http://www.mcpii.com/engine.html">Oxygen Sensor Spacer</a>
...but there just is not any room to install them without seriously modifying (ie: removing and cutting away) the down pipe/cat shield to allow them to thread in. This is simply beyond my capabilities.
OK, so the least expensive route did not work, guess I am back to replacing the cats at the dealer ($$$) or getting after-market down pipes? If the latter, who makes any for the allroad? It is a 2.7t engine.
What about these?
<a href="http://vastperformance.com/shop/product_info.php?cPath=22&products_id=65">VAST "PIGGIE" Turbo Downpipes</a>
Or these?
<a href="http://www.tantrumwerks.com/html/27exhaust.html">Tantrumwerks Exhaust for the Audi 2.7T</a>
#2
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as the only other alternative I know of is Milltek and it runs like $2400. Vast might be good as you would get new cats, and always better than doing it yourself, which wouldn't solve your problem anyway. I see no where that they say the core has to be in perfect working condition, just that they may charge an extra $100 for a bad cat (extra $40 for bad flex joint).
If you have an MT you have a lot more options AWE, ASP, APR, Milltek and a few others. The MT DP is a lot cheaper.
Second link is only for the S4 as far as I can see, it has to be for the A6 with 2.7T.
If you have an MT you have a lot more options AWE, ASP, APR, Milltek and a few others. The MT DP is a lot cheaper.
Second link is only for the S4 as far as I can see, it has to be for the A6 with 2.7T.
#4
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for those (myself included) who have added spacers, they are the simple BUNG...ie a 18mm thick type that just moves the O2Sensor further out of the path. The right angel par you you are trying as you found..has no room.
#7
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exhaust stream with a spacer would cause all kinds of a/f ratio problems since the ecu actually uses them unlike the secondary sensors which just monitor cats functionality.
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#9
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I'm most likely buying a new house. My sister(runs 2 Coldwell Banker offices) found me a nice short sale which 2 years ago I would not have been able to afford.
I'll get the nice 8k tax credit from Uncle Sam that doesn't need to be paid back also! : )
I'll get the nice 8k tax credit from Uncle Sam that doesn't need to be paid back also! : )
#10
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signal that the cats are going bad? It should be the sencondary o2's and in that case, antifoulers should work on the secondary o2's.
VAST sells anti-foulers. They also sell piggied DP's.
VAST sells anti-foulers. They also sell piggied DP's.