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You're right, a 3" pipe is plenty. The name of the game in exhaust design (for performance, not acoustics) is to keep the velocity high so as to retain as much inertial energy as possible with as little surface area as possible. A smaller surface area equates to more heat retention which...

Let's just assume for a second something is off- because no one is getting that bad of mileage. The only way his vehicle would be getting that kind of MPG would be either: A. His MPG calculator was off by about double.. B. His entire two tanks has been spent at the dragstrip. C. There is a...

C'mon guy- you could have read the actual thread! https://www.explorerst.org/threads/as1-valvetronic-exhaust-build.4214/post-54766

While I understand your sentiment, I don't agree. Not all Ford dealers are crooks. As far as the single bolt diff, there is no way anyone is going to convince me this was done by malice or negligence. If you think they purposely did this so they could deal with possible multi-million dollar...

Watch out @Rick, he'll put you on "Ignore". Here's the example where he banned me: https://www.explorerst.org/threads/poll-how-many-have-experienced-a-rear-axle-bolt-fracture-poll-closed-6-4-22.3727/post-48313

That is a possibility, but I would not recommend that anyone plays with one of these "piggybacks" in this day and age. Also, I think some people on here (I am not singling anyone out) need to think just a bit about ethics. It sounds like you want the ability to play, but then have Ford pay if...

If you're the type who is even slightly concerned about something voiding your warranty- then don't do it. People can talk all they want about the Magnuson-Moss warranty act, but if your claim is denied, do you really have the money and time to A. Let your vehicle sit somewhere unuseable for...

And this, ladies and germs is how you build an expensive part that dies a violent death. CVFab anyone?

But hey, look at the snappy comebacks he has! Unfortunately they're not intelligible.

I only asked because I thought his Platinum already had the 4-bolt. If it doesn't then it makes perfect sense to purchase.

Well, you're right, it's mostly air- in fact it's completely air. But if the injectors don't inject fuel, then the mixture isn't lean. For the second question, the charge pipe doesn't have anything to do with pressure per se. You're also dealing with a speed-density system, not a MAF based...

You should probably post again- maybe someone in the back missed the first five! ;)

Ford changed the programming on the 22s. They no longer need the BOVs, nor will a BOV do anything other than make a bit of noise. Sure they probably saved a few bucks, but it's not technically correct to post they did it "to cut costs".

Your diff cover should fit. It'll be interesting to see. Why did you buy the 4 bollt subframe?

The Audis are nice, but the SQ5 does not have 3 row seating like the ST, so not really the same class vehicle.

2022 doesn't have a blow-off valve, unless you bought an aftermarket intake that provides for it.

It's just a saying here- to drive 10/10ths is to drive full out race mode.

Then don't use it. It isn't a mind-reader. It's designed to hold gears longer and utilize engine braking as if you were using a manual transmission. If it's a problem, there are paddle shifters you can use to rectify the situation. For those of you who have never driven 10/10s in this thing...

Certainly it's not a copy of the AWR brace. You're also right that it only has two bolts in the diff housing- had to recheck original thread on that. Any decent engineer would be hard-pressed to say that AWR or ID speed aren't capable. I'd have to say the calculation of the various loads, is...

No, the Diffy Stiffy brace isn't "enough". It is not well designed and I've pointed it out in other posts. The AWR brace in my opinion is probably overall the best although as I've also posted I'd like to see another bolt higher up on the RH diff side to make sure it's anchored securely to the...