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That is pretty scary . . .

https://www.tirerack.com/tires/michelin-pilot-sport-4s "The Pilot Sport 4S excels in warm dry and wet conditions, so like all Max Performance Summer tires, is not intended to be serviced, stored nor driven in near- and below-freezing temperatures, through snow or on ice." and "Note: Tires...

OK, I will keep it in mind to slow down a little when it is below freezing. Thanks.

I had Michelin PS4S on my Audi, which is all wheel drive (Quattro, basically a torsion differential that sends power rear or front up to a 60/40 rear front distribution) and drove them year around with no issues, but I live in the US southeast. I would drive them when temperatures were in the...

Since you are almost 60, maybe you are retired and rich already (I hope so) but if not stopping this habit of buying a new car every year and taking the massive hit when you buy each successive car could help you to get some more money socked away in the next few years prior to retiring. I...

Goodyear Supercar 3 R has 305/30 R 19 and 325 <--- although I would probably just run the 305.

I am at 6800 miles, and one of the rear tires is finally showing a bit of cord. :frown: It is in the 70s today, so I took it out for a drive. Surprisingly, the tires still stick . . . lol. I found my road with sweeping up and down hill curves and pushed quite a bit once the tires built up...

Back when my cars of choice were classic Pontiacs one of the biggest ways to pick up horsepower was 3" exhaust, x crossover, and, while these engines were a lot bigger (472-540 or so ci) they were not pushing 8000 rpm, either. Lots of guys, sick of the 3" noise, necked down to 2.5 mufflers...

I might be losing confidence in these guys and looking for somebody with more experience. This is also why I suggested reaching out to Flowmaster. They may have seen this same failure 350 times, and a phone call might get a tech who says, "Oh, yeah, that is the result of installing them this...

Is lying not an offense for police officers in New Zealand regarding actual facts in an investigation?

Anyway, those are my thoughts. Apparently there is a 2.5" pipe from the factory manifolds back to the resonator, where it necks down to 2.25" After the resonator, the restriction opens back up to 2.5" So 2.5" exhaust with a slightly more restrictive (quarter inch) resonator section. So my...

You missed the "UPDATE" I was typing as you posted.

Q6543 posted his real world results (e.t. and mph difference) changing nothing more than getting rid of the 2.25" kink and installing the 3" dual muffler in place of the Ford factory stock resonator. It was significant, but he was already supercharged at that point and pushing a lot of exhaust...

Agree Disagree, but I admit I could be missing something. The reason for the dividing line is the internet sales must from 2019 charge sales tax in the delivery state (Arizona). There is no longer a physical presence requirement. That was overturned by the Supreme Court in 2018 in the...

I want more power but the same or less noise as stock. It seems like getting rid of that 2.25" pinch would contribute to power, and Q6543 said his was actually quieter with the 3" muffler setup I was thinking maybe headers, a full three inch pipe from the headers into the three inch jones dual...

Weird that the torque and horsepower are on different scales (left and right sides do not line up), but a good increase in power. It is interesting how much of the horsepower peak is made after the previous pull cut off around 7300-7400 rpm.

The dealership probably won't cover it, since you added the Flowmaster mufflers. Have you reached out to Flowmaster to see what they say about this? I would hate to swap out the actuator only to discover that it was not bad. You wrote, "They checked it over and did everything that was...

Well, I guess I need to get this Ford app, then, just in case?

What is the O.D. on the pipe leading into the resonator or H crossover before the neck down to 2.25" ?

Here was the post in which Q6543 described the muffler he put in place of his resonator. He picked up e.t and mph with headers, installed a Whipple, and picked up e.t. and mph with the muffler in place of the resonator, probably due to 3" pipes all the way through...