cozza Posted January 9, 2016 Posted January 9, 2016 I'm amateur but not a noob, and I'm pretty sure something ain't right. Took my exhaust off to do some other work (1990 Z32 TT), and I couldn't help but notice there are no cats on the underside of the car. But fair enough, I've fixed cars before with cars in the engine bay. But then I saw replacement exhausts etc and they all had the cats on the underside of the 300zx, so I followed my pipework and I know where the lambda sensors are (right behind the engine bay) but as far as I can tell, I can't see cats? My car had its exhaust system replaced in 1998 immediately after the last owner purchased it, and I have receipts every year for parts/MOTs since but none mention a decat, and none mention emission failures/advisories for MOTs - although perhaps they "knew a guy". I have a some minor white smoke out my exhaust, but no bad smells of HCs or NO/NO2. So.. is there something about the early Z32 emissions or TT model that means a cat isn't needed? The last owner was into racing, fitted a custom cooling fan amongst a few other subtle mods.. Backbox & Midsection: Mid to front section: Split: Split 2: Split 3: Engine bay with lambda sensor (corroded bit below the red wire) Quote
Alic Posted January 9, 2016 Posted January 9, 2016 Without cats a 300zx TT will still pass emission tests :thumbup1: He probably deleted them to increase exhaust flow. Quote
dutchgold92 Posted January 9, 2016 Posted January 9, 2016 No cats visible there. I think only USDM had precats. Quote
Chrisbasildon Posted January 9, 2016 Posted January 9, 2016 Without cats a 300zx TT will still pass emission tests :thumbup1: He probably deleted them to increase exhaust flow. Only early year models Quote
cozza Posted January 9, 2016 Author Posted January 9, 2016 Was it 1991 or 1993 when there was a change in emission/cat laws? But either way, thank ****, was dreading the thought of new cats hahah Quote
Guest dan300zx Posted January 9, 2016 Posted January 9, 2016 No cats visible there. I think only USDM had precats. uk cars had a pre cat to Quote
Chrisbasildon Posted January 9, 2016 Posted January 9, 2016 Was it 1991 or 1993 when there was a change in emission/cat laws? But either way, thank ****, was dreading the thought of new cats hahah Any z registered before August 1995 does not have a cat test done during mot. Quote
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