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billjam billjam is offline
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Join Date: Aug 2007
Location: Perth, Western Australia
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Originally Posted by 9dreizig View Post
Hey don't forget, he's got an 87, which means CAT so the O2 sensor has to be before the cat and after the turbo.. a PIA I'm still trying to figure out where I"m going to put mine.
My $0.02 ... (I am at work and bored!)

On my 86, I have deleted the cat and original narrow-band O2 sensor (hole plugged) and put my wide-band sensor just after the muffler. I couldn't fit it between turbo and muffler and this was only other option.
If it is at the right angle, it can be removed through a 25mm hole in the sheetmetal without dropping the engine.
I played safe and got a bit nervous about putting it before the turbo in the original location (where Rarly has it) due to talk of over-heating and possible turbo damage from a broken sensor. However, this is by far the easiest location for access.

I guess it also depends on whether you need to keep your original narrow-band sensor and cat in place.

1988 Carrera - 3.6 engine (with ITBs, COPs, MS3X) and a whole set of turbo body panels waiting in the attic.
Day job ...
Memories: '68 912, '72 911T, '80 911SC, '84 911, '85 930, '86 930, '87 911
Old 01-05-2009, 03:47 PM
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