Just wondering if anyone on here has de-catted their 100HP or even had a sports cat put on it?

I was thinking about getting something custom made as nobody seems to make one for it. If I were to do this, would there be a problem with lambda sensors and so on?

supersprint do a manifold + sportscat + centre pipe setup, if thats any use? It isnt cheap though
Or just get the manifold for £375 ish and then a universal sports cat from fleabay

I'd like to do it but finances wont allow for it

W23AJH 100HP said:

If I were to do this, would there be a problem with lambda sensors and so on?

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if you still put 1 in front and 1 after the cat it should be ok.
only problems you get is sports cats don't sit near the engine so take ages to warm up, if you get an impatient mot tester it will fail as he wont have let the cat get hot, wrapping it may help

You don't need a Cat for the oxygen sensor to work okay. I know this because I've run plenty of JDM imports without cats and they all have oxygen sensors.

Tbh I'm not convinced there is really much to gain in all honesty by removing it.

trackdayqueen said:

You don't need a Cat for the oxygen sensor to work okay. I know this because I've run plenty of JDM imports without cats and they all have oxygen sensors.

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did they have 1 or 2? modern ecu's play up if readings between the 2 are not what it expects

Just one.

How much does the emmissions go up by from removing the Cat & addng a Sports one..? Could be an MOT fail.

You'd be ok with a 200 cell, doubt you would be with a 100 cell though as they are more geared for high horsepower applications.

Isn't it just about utterly pointless de-catting a 100hp? I mean what might you gain? Maybe 1 or 2bhp if anything at all.