High Flow Cats - Land Rover Forums : Land Rover and Range Rover Forum
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post #1 of 50 (permalink) Old 10-26-2018, 10:40 AM Thread Starter
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High Flow Cats

I'm looking to enhance the occasional gurgling noise my Rover gets at idle.

What are the best high flow cats on the market for this? I don't care about passing emissions anymore because I'm registered in a non-emissions testing state. I'm also not worried about CO2 air pollution because it's a bunch of bull schnizzle and my engine is very clean.

So now this is out of the way. May someone please advise the best high flow cat for making the "gurgling" sound when at idle? I'm looking for a slightly crispy popping with gurgling at idle.


The cats slightly take away from MPG and Horse Power and I would get rid of them altogether if I could but then the check engine light would come on. I read there is a device you can buy to trick the rear cats but I don't see where they make this for Land Rover.
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post #2 of 50 (permalink) Old 10-27-2018, 06:20 PM Thread Starter
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What can I buy to trick the rear cats ?
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post #3 of 50 (permalink) Old 10-27-2018, 08:04 PM
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Maybe this? https://www.magnumtuning.com/en/deta...over/discovery
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ALL MY ADVICES ARE BASED ON MY OWN KNOWLEDGE AND MY WAY OF UNDERSTANDING THE DESCRIPTION AND OPERATION OF SYSTEMS... I'M NOT A LAND ROVER TRAINED SPECIALIST JUST AN ADDICTED ENTHUSIAST.
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post #4 of 50 (permalink) Old 10-27-2018, 09:45 PM Thread Starter
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Wow thanks. That looks great. Exactly what I was looking for. Thanks! Now I just need to find someone to install it.
..
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post #5 of 50 (permalink) Old 10-28-2018, 03:53 PM Thread Starter
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I'm going to purchase fake cats .. then I'm going to buy this .. and pay someone to install it ...

I've already deleted the silencer, and muffler.

Now I will get that gurgling sound at idle..
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post #6 of 50 (permalink) Old 10-29-2018, 06:56 PM Thread Starter
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Are these easy to install ?
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post #7 of 50 (permalink) Old 10-29-2018, 10:59 PM
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According to the pics and diagrams it's a joke for somebody who has basic electrotechnics knowledge, any auto electrician with an IQ from 3 digits should be able to do it.

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2000 Discovery Td5 ES manual

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VDM UCANDAS, oscilloscope


if you think my english is peculiar it means you didnt hear my japanese

ALL MY ADVICES ARE BASED ON MY OWN KNOWLEDGE AND MY WAY OF UNDERSTANDING THE DESCRIPTION AND OPERATION OF SYSTEMS... I'M NOT A LAND ROVER TRAINED SPECIALIST JUST AN ADDICTED ENTHUSIAST.
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post #8 of 50 (permalink) Old 10-29-2018, 11:49 PM Thread Starter
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According to the pics and diagrams it's a joke for somebody who has basic electrotechnics knowledge, any auto electrician with an IQ from 3 digits should be able to do it.
What is "basic electronics knowledge" ?
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post #9 of 50 (permalink) Old 10-30-2018, 12:06 AM
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To be able to understand what they mean in that scheme and notes they made and join the wires of the original sensors as needed, if you didnt get anything from theyrs site you dont have that basic knowledge, find an electrician

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2000 Discovery Td5 ES manual

Hawkeye v.6, Nanocom EVO,
VDM UCANDAS, oscilloscope


if you think my english is peculiar it means you didnt hear my japanese

ALL MY ADVICES ARE BASED ON MY OWN KNOWLEDGE AND MY WAY OF UNDERSTANDING THE DESCRIPTION AND OPERATION OF SYSTEMS... I'M NOT A LAND ROVER TRAINED SPECIALIST JUST AN ADDICTED ENTHUSIAST.
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post #10 of 50 (permalink) Old 10-30-2018, 09:35 PM Thread Starter
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Yeaaa i don't understand any of that .. I'm a plug and play kinda guy .. ha ha
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post #11 of 50 (permalink) Old 10-31-2018, 07:50 PM
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O2 sensor spacer costs about $12 and will trick the CEL. It’s basically a tube that goes between the sensor and the threaded hole after the cat.
I prefer to keep high flow cats to make the exhaust smell better if for no other reason. The HP loss is inconsequential compared to the terrible manifolds anyhow.
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post #12 of 50 (permalink) Old 10-31-2018, 10:26 PM Thread Starter
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O2 sensor spacer costs about $12 and will trick the CEL. Itís basically a tube that goes between the sensor and the threaded hole after the cat.
I prefer to keep high flow cats to make the exhaust smell better if for no other reason. The HP loss is inconsequential compared to the terrible manifolds anyhow.
Thought about getting new manifolds but not not gonna spend 3k on manifolds just to get a "crispier" sound if that's all they do ..
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post #13 of 50 (permalink) Old 11-06-2018, 10:22 AM Thread Starter
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Ok so I got the spacers and the fake cats. The shop is refusing to install them and saying nobody else will either. they claim it's "illegal" and "we ain't gittin in trouble". Is there a way to put these on myself without a welding machine?
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post #14 of 50 (permalink) Old 11-06-2018, 01:01 PM
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post #15 of 50 (permalink) Old 11-09-2018, 03:37 PM Thread Starter
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