DOUG D22
Member
2.5 2.75 or 3" exhaust, which every u choose would it cause any problems short or long term by run it with no muffler or cat?
I took my muffler off, and it didn't make much difference at all, still sounds like a hair dryer.05' navara so legally not required to run a cat. i already have a beaudesert 2.75" system. it just very quiet (long straight through muffler) just wasnt sure what damage could occur if i removed the muffler and fitted a straight through pipe.
05' navara so legally not required to run a cat. i already have a beaudesert 2.75" system. it just very quiet (long straight through muffler) just wasnt sure what damage could occur if i removed the muffler and fitted a straight through pipe.
all cars produced after 1975? must be fitted with a catalytic converter, even diesels...
who said that you dont have to?
EDIT: googled and have found a few different dates of when the law came into effect, but i've been told 1975?
i'm not sure what year it is, but my mate last year got pulled over and yellow stickered for not having a cat converter. after going over the pits his car was given the thumbs up for not having one and it was fine since his car was produced before that law came into effect.
surprised your '88 diesel doesnt have one pro-nav if as everyone is saying that they came in the 80's?
but as an '05 model vehicle i'm sure that it'd be compulsory to have one?
The '05 vehicle will require one. Diesels may have only got cats when they went to electronic injection? Early-mid nineties.
any idea why such cars like the D40 have a cat plus the DPF?
did stricter emissions come in or something?
The question was about straight through exhaust not about the legal requirement of cats..
So has any one just ran straight through and has/hasnt had problems?????
Yes i have done for many years on many different diesel engines, it produces way more power, not much more noise and a heap of whistle, never any engine related problems.
cheers mark.
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