replacement catalytic converter - generic free flow

[ozscott]

I have a stuffed cat on my v8. I have a pretty free flowing muffler. I might as well do both cats at the same time. The factory oem cats are crazy dear. Anyone done generic and better flow?

Cheers

[walker]

Just get rid if them all together. :angel:

[ozscott]

Yep I was tempted but want tye truck to still pass emissions testing if I ever get pulled over.

Cheers

[Eevo]

go cat less
i did

[sheerluck]

I was looking at the Magnaflow universal weld in ones for SWMBO's ML320, and they were going to work out at $95 each delivered. The ones for the D2 look like much the same price.

They are supposed to be quite free flowing.

[justinc]

don't forget about the fact that rh side requires a thinner cat to clear the tailshaft.

jc

[twr7cx]

Definitely replace with high flowing units. In the last few years they've gotten a lot cheaper.

Generally cat converters only last around 100,000km.

[brenno]

Yep I was tempted but want tye truck to still pass emissions testing if I ever get pulled over.

Cheers

In all my years of driving cars and trucks (2 and a bit decades), I have never, ever, ever, had an emissions test. To be honest, I don't know of a single person who has.

Do the constabulatory perform these tests, or other powers that be??

[ozscott]

DOT did up here but haven't seen them for several v years

Got a guy who will put on hf cats.

Cheers

[twr7cx]

In all my years of driving cars and trucks (2 and a bit decades), I have never, ever, ever, had an emissions test. To be honest, I don't know of a single person who has.

Do the constabulatory perform these tests, or other powers that be??

Despite that, isn't the fine if your busted without cats in the thousands?

[brenno]

Despite that, isn't the fine if your busted without cats in the thousands?

I don't know mate. As I said, I've not been tested, nor has anybody I know. As such, no-one I know has been busted either.

[Ollie]

I am really sorry about starting this again but I don't get out much.
"A cat less world, what's left to chase"
Buster

[justinc]

The grandmother who turns cats into hats - Telegraph (http://www.telegraph.co.uk/news/newstopics/howaboutthat/2274696/The-grandmother-who-turns-cats-into-hats.html)



Hmmmm......:D

JC

[ozscott]

The bloke who is doing it next week is very good. He did a full new system on my d1 and muffler on my d2. He says the new ones are stronger, better flow, tucked up just as well out the way and WAY cheaper with no ceramic centre.

Cheers

[Ollie]

Can you pls post the details after it is done, with a make and part number if possible, the boys V8 exhaust will be up for replacement in the not to distant future

[Benny_IIA]

why not just get a 'nocat convetor' from frozen boost...

looks like a cat, but just has straight pipe in side :D

[walker]

why not just get a 'nocat convetor' from frozen boost...

looks like a cat, but just has straight pipe in side :D

I like that. :twisted:

I am going to try to remove mine, but I think it will depend whether the exhaust place will do it.

How much effect does the cat have on performance anyway and does it cause more restriction as it gets older or doesn't it make any difference?

[brougham]

I just had new high flow cats put on as the old ones were stuffed from the old motor dying. Engine definitely has liked it, slightly better economy I think too

Plus gives a bit nicer tone to the v8.

Oh and only about 1/4 the price of the genuine LR replacements too!

[jafir]

Yep I was tempted but want tye truck to still pass emissions testing if I ever get pulled over.

Cheers

You might be able to install fake cats. A guy over on discoweb still passed the tail pipe sniffer test on his 95 (that last year over here that the computer doesn't check for cats).

Good cheap cats - DiscoWeb Message Boards (http://www.discoweb.org/forums/showthread.php't=81386&highlight=sniffer)

I'll bet a Bosch engine would run even cleaner than his old Lucas setup.

[ozscott]

On LPG it would be cleaner than the air in Shanghai. ..

Good to hear about the high flow cats...the fella I deal with sounded excited about high flow so presumably they do make a difference.

Cheers

[sheerluck]

On LPG it would be cleaner than the air in Shanghai. ..

Yes, having been there a number of times, it's one of the few places in the world where you have to chew the air first before breathing it in.

[Davehoos]

Cat removal.

drive by test-cat generates lots of heat,standing on the road with a laser temperature devise or those magic glasses with most cars is easy to detect if the cats disconected.

it been planned to set up roadside testing like speed cameras,and these do existbut ofthen most modern cars will pass a radside test without the cat operating-its intension is to work low speeds and medium loads hyway cruise it does very little.

most of these organised ideas are so busy with the work they already have that they dont need to round up more work/fines.they do focus on roadworthy inspections car modifiers and used car dealers.

my 89 range-93 3.5 disco-94 3.9 disco has no cat and would most roadside operators know about how it works.what occurs is that you get pulled over and you get a defect for any silly item-A mates son got loose battery in his GTR skyline-then they tick the box on the form that it must be inspected at [in newcastle] heavy vehicle check station.

spent months of the road being rebuilt to original.

CAT replacement.
new petrol engine now have an O2 sencor to check if the cat is operating.
these have been around for some time in some vehicles.had a few visits to the benz dealer and seen full exhaust and sencors being replace that after being fitted with nongenuine parts they loose performance.I found this with some older vehicles and even the genuine replacment wont match the car as the parts become superceeded parts.

interested in how light diesel are going to go.most of these have no exhaust sencors.I picked up an isuzu fire truck this week for a service and it limped home up the street before stopping with beepers and flashing warnings.

[clubagreenie]

Removing will cut down the floor temps as well as reducing heat effects on the DC joint of the front tailshaft. There's only pre cat O2 sensors so there's no effect on the ECU. My 4.6 on 4.0 ECU catless passes tests, done for the conversion and didn't even check for them.