Quote:
Originally Posted by Banshee
Sensor spacers?
What are they, and where from, please?
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They screw into the o2 plug and then you screw the O2 sensor into it. Basically the rear cat sensors tell the ecu whether there is enough difference in the resistance on the sensors compared to the forward sensors reading for cat performance to be considered normal. The spacer effectively ensures the resistance on the rear sensor is always different enough and therefore you will not get the cat degraded performance codes.
Exhaust shops often put them on new performance exhausts because the cats are doing sfa and there is no effective resistance difference between the front and rear sensors.
Obviously if you suspect the cat is breaking down and at risk of blocking up its not a solution but you are not in this situation.
Any dodgy looking low key exhaust shop will have them look at one that advertises commodore performance exhausts. Or amazon, probably eBay too. I think there are two main varieties and you need the 18mm variety (but you best measure the sensors fittings to be sure)
here's a link so you get the idea
http://a.co/0KJqSRa
I don't know if these particular ones work well as I got mine from an exhaust shop.
IDK how they would effect your roadworthy check up in nsw either they may not like them.
You'll likely also need to clear your fault codes the first times after fitment
It's almost silent at idle or when on a trailing throttle, but quite loud when uphill under power or slowing down on overrun. And has what sounds like an irritating metallic rattle at certing revs, which is just the way the pulses mix with the equal length header tubes, as there really isn't anything lose or leaing now.
