Because it does make a difference, not as much on smaller engines as larger engines, but it does make a good bit of difference:

No, no there isn’t.

Not even then, someone could get a paint scuff.

Nope, the devil (patriarchy) made her do it.

Yeah, but I still find it amazing how no one ever pulls that crap on me when I’m driving the F350, as compared to how they act when I drive my other cars.

Obviously, brake checking someone at that speed any speed is ridiculously unsafe and a major asshole move in any case.

Well now, there’s a problem, and it isn’t one that has any real solution. Burn fuel, you get emissions. With the more fuel you burn, the more emissions you get.

The thing I’m saying, not implying, is that catalytic converters do indeed use more fuel during warm up, ECUs are programmed to do so.

Would you think that a 1960s or 1970s manual about how to rebuild a Chevy 350 (5.7L) would be completely irrelevant today?

Brother, it isn’t just an article, but the fact that I own several vehicles, one track only vehicle, and removed cats from quite a few vehicles in my years.

They are, as far as accuracy is concerned. But a gas piston operation, tight or loose, will always be superior in reliability to a DGI system, at least up to today. (things always change, you know)

I’ll have you know that gas piston operation is infinitely more reliable in severe conditions than direct impingement.

Are you trying to ask if I’m a fan of slipknot?

It is indeed, but is generally only done on traverse mounted 4-cylinders (which I stay away from), and I seriously hope manufacturers don’t extend it further. Toyota has been doing it for some time.

And the more things change, the more they stay the same. If you don’t believe me, then try it. Empty the tank on any vehicle you like, fill it with 5 gallons, and drive it. Then do the same, after removing the cat and replacing it with either a muffler or a straight pipe. Record the mileage differences, and you’ll see…

But clearly, peanut butter M&Ms are better than peanut M&Ms. At least at slap fighting.

Yes they do, but that does not explain the continuous extra use of fuel, even after the engine has warmed up, when the only difference is the removal of the cat.

Basically....yes. Except without the payload, and being smaller, and quite possibly remote controlled.

Even a broken clock is right twice a day, eh?

You’re right, that isn’t how cats work. However, he was in the general ballpark, as vehicles are tuned to use more fuel until the cat heats up. They do this in an attempt to purposefully heat up the cat as quickly as possible. This is how we get the P0431 error code, because once the engine is properly warmed up, and…