GR Yaris Whifbitz sports cat

[ksc]

Seems like Garage Whifbitz have released a new sports cat for the GR Yaris (and GR Corolla).

Garage Whifbitz Toyota Gen 1 GR Yaris GR Corolla Sports Cat

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www.garagewhifbitz.co.uk

It comes in at a lot cheaper than the options I've seen from other manufacturers, which I considered pretty high up the cost:benefit scale. I'll be interested to see if any user reports come in on this. I'm also interested in where the price difference comes from: my understanding of sports cats was that they are legitimately catalysing the exhaust gases, but skirting closer to emissions limits and doing so more efficiently using more complex geometry.

Whifbitz always say their sports cats/decats are exclusively for motorsport cars - and I'm sure they are - but I thought this nugget was interesting:

Although this sports catalyst is capable of achieving emissions levels suitable to pass an MOT emissions test on a correctly maintained vehicle, it is not MOT compliant due to the high-flow catalyst construction and lack of OEM type approval. It may therefore fail the visual inspection element of the MOT test.

Presumably this puts it in the same category as GPF deletes. The legality of those, and their insurability, and their morality, is a topic that has been discussed in depth on this forum, but they're clearly passing MOTs.

AFAIK HJS have a type-approved sports cat but Miltech's isn't. Of course, an empty pipe for your motorsport vehicle is even cheaper

 

[GRBadger]

Isn’t any change to the stock emissions control systems of a factory exhaust (both noise and particulates) technically non road legal hence the disclaimer?! Although currently only emissions targets are tested for an MOT. I bought a HJS around this time last year and was around £1600 including fitting so this is an absolute bargain in comparison with plenty of bang for buck.

 

[Boosted8]

I expect it uses one of the GESi cores from the USA. Not far off HJS quality but much cheaper. No EU type approval however hence the disclaimers.