Thread: Defender 130 TD5 What do i need to do to get her going off the mark.

Originally Posted by Mellow Yellow

Tap the cat with a rubber mallet. If it rattles it's collapsed/collapsing.

Removing the cat is definitely illegal. You can replace it, stay legal and have better performance for less than $300.

When you're going 110km/h, and the engine shudders, then you see a spray of molten-red-hot ceramic spewing out the exhaust pipe... you know the cat has packed up and left (was not in a defender).
You'd be surprised how many cat convertors have the biscuit just packed in with kevlar wrap. When this shifts, it will rattle itself to death. I've had this with a euro3 spec cat.

Technically, removing / modifying any part of the emissions control system is considered illegal (unless cleared by going over the pits / dyno cell at the RMS facility in port botany (for the New South Welshmen amongst us).
So non standard cats, aftermarket intercooler, changed EGR / idle air intake, PCV, etc all counts as a no-no in the eyes of mr plod. This argument falls on shaky ground when we start talking about 20+ year old vehicles.

Personally, I presented to a defect inspection station for a noise / air pollution control inspection with a set of euro3 spec cats on a car built in 1991. Euro 3 is compliant to around 2003 emissions specs. I was required to fir standard 20 year old items to the vehicle because the cats need to be matched to the vehicle (reach temp, burn off hydrocarbons, NOx etc).

Someone said the law is an ass.
If I ever meet that bloke, I'll buy him a beer. Couldn't be more correct.

Originally Posted by Dougal

Compound turbo.

Yes, it's the solution to almost all performance or drivability problems.

All the cool kids are doing twin-charge setups these days.

Or get more cubes. Bitches love cubes.