Best apology ever

Good advice regarding not revving when static.

Thank you for the explanation and sharing your findings with us 🙏

Great work all round. Great knowledge and Thankyou for sharing.

Fantastic information as always... viewers should be thanking you for your thoughts and expertise .... Cheers.

Always good to hear some honest opinions

everyone is an expert behind the keyboard. Good video and explanation, and static revving is dumb... thanks for the video!

In the video, there's a comment about being able to de-cat in the US. In some states, yes. But you can't de-cat a car that's registered in the state of California. There are periodic inspections. Of course, you can reinstall-test-re-cat. And a savvy California Highway Patrol officer can cite you between tests if you get pulled over. Great channel. Thanks.

Great video. Well explained.

“Cats don’t like being cooked” . meow Lol.

Great info. I’ve always wondered if revving a car damages it. Now I have my answer. By the way I almost never rev my car.

Great advice 👏

Abuse any car and it will get its own back by abusing your wallet 🤷🏻‍♂️. Good video and good genuine advice to us owners. Thanks guys

Thanks John SOME PEOPLE ON THE TINTERNET THINK THEY ARE ROCKET SCIENTISTS I AM CLOSE TO BUYING A 12c OR 650S AND I WILL 100% BUY WARRANTY OFF YOU AND I LIKE YOUR ATTIUIDE SAY IT AS IT IS THANKS JOHN IGNORE THESE TWATS

Great video John, keep them coming. I guess you are talking about regular aggressive static revving? Is any static revving a no no?

@ThorneyMotorsport

4 жыл бұрын

Any static revving of the car is a little pointless, and when we say revving I'm talking higher rpm stuff. The big one to avoid is the harsh 'blipping ' of the throttle to generate flames from the exhaust, the flames come from unburnt fuel hitting the cats and literally exploding, this damages them.

Why does the 720S reves up so high on startup.... like once u start it it reves so high then slows down2 seconds later

makes sense to me 👍

The cheap cat has clearly failed, it looks to me that the cat element has become loose and actually come into contact with the exhaust side of the turbo and chewed it up.. Amazing. Yes revving constantly at a standstill is one sure way to BBQ your cats. Dont do it, its not a v10/12. Mechanic and tuner of 12 years including McLaren for a short time.

But doesn't that mean that decating it in the US, will try the turbos.... Also afaik the epa is cracking down on that. Want to make it illegal even on private property to run a modified engine. Mainly about the add blue deletes but should also affects cats.

Some people don’t deserve a nice car....

@elta6241

4 жыл бұрын

Nigel Hirst I understand the furore over some of the reliability issues, but some people do some stupid things.

@actuallypaulstanley

3 жыл бұрын

I think it is people buying these cars second hand and thinking they are a £70k German car, so can run it like that... They forget these are £200k cars, and their service requirements, new or old will still be £200k car prices, not your usual £60k German car prices. I personally dislike people revving their standstill cars on social media, and the 0-60 drag races. These are performance cars, so built to 'handle', and be driven around corners, not just in a straight line... Just imho... 🤔

@nigelhirst9845

3 жыл бұрын

...or worse! Older, out of guarantee. What could possibly go wrong? 😰😰😰

Only about have the states in the US you can remove the cats ILLEGALLY. Half the states have emission testing. But removing the cats is against federal law.

Don’t listen to all the ppl online they are not techs I seen a cat do that once on a performance car and we found a fuel issue the fuel had to much silicone causing them to over heat

👏 👏 👏

Ignore the idiots on social media they probably drive a Corsa anyway 😁👍...my money is on you being right anyway. Good video.

So this is a stupid question - but how is static revving to induce flames different from driving hard and having flames come out during the experience? Isn't it still unburnt fuel? I'm thinking 600LT.

@ThorneyMotorsport

4 жыл бұрын

Flames in normal driving are caused by fuel from the over run (when you lift off the throttle and the cylinders still have fuel in that is unburnt, its momentary and short lived. THe car is moving so it has airflow going through the intakes so its more of a snapshot in time where the fuel ignites in the exhaust rather than the cylinders. With static revving you are repeatedly creating this over fueling effect so it involves a lot more fuel being repeatedly thrown into the cats where they ignite and burn out. Do this over and over again causes the cats to over heat and break down.

What gains can be made from decatting a 12c/650s?

@ThorneyMotorsport

4 жыл бұрын

We dont recommend decatting any Mclaren, lack of engine protection is one, but you get the same power gains from proper race cats

@brianhimmelman420

3 жыл бұрын

@@ThorneyMotorsport without saying after market down pipe cats to avoid, which would you recommend? Soul? Thanks

@ThorneyMotorsport

3 жыл бұрын

@@brianhimmelman420 Take a look here, it explains cats and the relative quality and what you should look for: www.thorneymotorsport.co.uk/custom-exhausts/

Just don't get how you are being criticised John ???? Social media is crazy and full of idiots who think they know better. Presumably reasonable revving to 5 or 6,000 RPM for very short periods is not too bad and its only the hard revving to achieve flaming which cooks the cats. I think most people will blip the throttle on request without trying to show off and set the world alight

I won't abuse you here John, I will come and abuse you personally :). See you on the 17th ;)