Yes, we do. They may little measurable gain in peak HP under optimal conditions. Some minor gains but not anything significant statistically.

The main difference we have found is that the stock cats heat up extremely rapidly - like fast enough that without adequate cooling on the dyno cat overtemperature can be reached before completing even 1 baseline pull.

What happens then is the car dumps fuel like crazy and goes super rich and power drops off like a stone.

If you fit sport cats, the cat temperatures are much lower much more of the time so it prevents power loss under sub-optimal conditions more than it does increasing output under perfect conditions.

Also sounds great.

 

Sounds like there is a physical temp sensor monitoring cat temp rather than just a calculated value in the computer that doesn't actively monitor temp, correct?

 

I meant a sound video of the decat on a V8S

 

Yeah I'm wondering this too.

 

It is monitored by the primary o2 sensor I believe. Chris is smarter than me, he would know.

 

Anyone tried the 200 cell sport catalyst on a f-type v6 ?

 

Anyone put the 200 cell on an SVR?

I am worried it will make it just horribly loud and raspy due to the SVR's different back box and I love the sound of my SVR so I'd not want to ruin that.

I want to go a slightly different route with tuning my car to the norm as its a long term keeper so I am thinking of the uprated intercooler and 200 cel cats as they will both help reduce temperatures and lower temperatures are only ever a good thing.

I shall then probably get a VAP custom tune along with their crank pulley.

 

Whose intercooler (cold air side) are you contemplating?

 

Probably just the one Viezu sell, they all seem a similar price at around £1000, fitting is quite easy it seems.

 

edit