IS200 manifold decat

JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza Modifications & Tuning IS200 manifold decat

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cjoseph
Member

25-05-2023, 01:17 PM

Hi all ,
Just a question on replacing the oem manifold with a de-cat manifold and the emissions on a mot/nct ?
Here is a pic of a manifold on eBay are these made to fit or waste of time !

[Image: 05d5d6ba3656a7c68f55c0d39bb19259.jpg]

[Image: 05d5d6ba3656a7c68f55c0d39bb19259.jpg]

[Image: 2127a9e660343adb1b34b577d8cdc266.jpg]

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cjoseph

25-05-2023, 01:17 PM #1

Sparkystav
Administrator

14,683

26-05-2023, 01:13 AM

they are ok and generally pass the MOT with the main cat still in place

Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
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Sparkystav

26-05-2023, 01:13 AM #2

they are ok and generally pass the MOT with the main cat still in place

Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.

OutlawJapClub Admin Team

cjoseph
Member

26-05-2023, 01:18 AM

I just heard that they actually have been known to reduce power ?? That can't be right is it , surely removing the pre cats would increase exhaust flow therefore increasing efficiency ?

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cjoseph

26-05-2023, 01:18 AM #3

Wayne
Senior Member

607

26-05-2023, 04:05 AM

Yeah I read somewhere that a guy stuck a katana? manifold on and lost power. This was years ago though. I'm just gonna cut my cats off and weld some pipe in.

Wayne

26-05-2023, 04:05 AM #4

Yeah I read somewhere that a guy stuck a katana? manifold on and lost power. This was years ago though. I'm just gonna cut my cats off and weld some pipe in.

cjoseph
Member

26-05-2023, 11:17 AM

I'm getting a stainless steel cat back exhaust system being made. Just thought since they are tinkering with her exhaust system why not single manifold and cat pipe

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cjoseph

26-05-2023, 11:17 AM #5

cjoseph
Member

26-05-2023, 11:18 AM

Why not get the manifold and cat pipe done

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cjoseph

26-05-2023, 11:18 AM #6

Why not get the manifold and cat pipe done

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Wayne
Senior Member

607

26-05-2023, 11:35 AM

I've already got a JapSpeed cat back exhaust, just never got round to chopping the cats, gonna do it when I supercharge it. I was told at the weekend that aftermarket manifolds such as Toyosport ones require cutting in order to fit the supercharger cradle.

Wayne

26-05-2023, 11:35 AM #7

cjoseph
Member

26-05-2023, 11:50 AM

Ha ! That's exactly what I'm getting done on mine, refurb my SC kit including nuts and bolts !! Thanks for the tip

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cjoseph

26-05-2023, 11:50 AM #8

Ha ! That's exactly what I'm getting done on mine, refurb my SC kit including nuts and bolts !! Thanks for the tip

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Sparkystav
Administrator

14,683

26-05-2023, 01:21 PM

Wayne Yeah I read somewhere that a guy stuck a katana? manifold on and lost power. This was years ago though. I'm just gonna cut my cats off and weld some pipe in.

Ahh that was a tdi special I think, I wouldn't worry lol

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Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.

OutlawJapClub Admin Team

Sparkystav

26-05-2023, 01:21 PM #9

Wayne Yeah I read somewhere that a guy stuck a katana? manifold on and lost power. This was years ago though. I'm just gonna cut my cats off and weld some pipe in.

Ahh that was a tdi special I think, I wouldn't worry lol

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Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.

OutlawJapClub Admin Team

cjoseph
Member

27-05-2023, 11:36 PM

#10

Sensors along the exhaust system is there alot to it ? I know nothing regarding the setup or tricking the sensors, I have numerous posts but no conclusive notes just opinions? Might of missed a early post regarding this if anyone can help.

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