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The mkiv Supra Owners Club

1st decat


Guest White supra
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Guest White supra

Hi guys fitted a 1st decat on my non turbo

Sounds nice on tickover or light throttle

But if you give it some it sounds like a vw Beatle pmsl

Anyone else on here done the 1st decat

If so what dose yours sound like

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Hi guys fitted a 1st decat on my non turbo

Sounds nice on tickover or light throttle

But if you give it some it sounds like a vw Beatle pmsl

Anyone else on here done the 1st decat

If so what dose yours sound like

 

Yes mine did the exact same thing when i fitted my 2 decats

 

What did you use to seal the first decat?

 

Is it just the cat replacement pipe youve fitted or is it the manifold and decat in 1 version?

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Guest White supra

I can't make it out mate

mine sounds nice

Until I give it some i have checked gaskets even thow

There new

Wifbiz decat £200 one so not cheap crap very tin type rasp sound

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I have the exact same decat on mine

 

What gaskets did you use as there are no gaskets supplied with the first decat (mine werent anyway)

 

First time i fitted it i sized up some gaskets from mates work and fitted them and had the exact same noise you describe

 

Took it off and used loctite 5920 on every joint on the whole exhaust and it has queitened down loads but i do still hear the noise

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Guest White supra
Yes mine did the exact same thing when i fitted my 2 decats

 

What did you use to seal the first decat?

 

Is it just the cat replacement pipe youve fitted or is it the manifold and decat in 1 version?

 

No mate its the one that whifbiz do so from 2nd cat upto manifolds

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Guest White supra

Lol mate I did the same got some more new gaskets

Then tryed exhaust paste

The noise comes from the pipe without the flex part in it

Must be the flow of exhaust gas or somthing then

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Guest White supra

And me mate hks dragger 3" upto first decat

No loud like people make out

 

 

Anyone reading this do not buy the all in one

Off eBay manifold and decat as it will not fit

I am sending it back to the USA company

Crap still cost £200

Edited by White supra
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Guest White supra
are the o2 sensors screwed in TIGHT with gaskets fitted?

 

I have bolt down type 02 sensors but yes and new gaskets mate

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