https://cimg7.ibsrv.net/gimg/www.mia...75f93b0572.jpg
Looks like a thicc boi. Guess it would just be a matter of changing downpipe to vband. I'll keep my ear to the ground to see who's the first Miata owner to give it a shot. At $2300 + downpipe fab work; it's one steep price of entry. Guess there is no chance they will make a addition to this model to make for a nearly direct 2560R.

If they are going to make it internally gated, design the gate flow, and include all this, it will be at the price of an EFR.......without the gamma ti wheel.

So yeah. Back to square one

Are EFRs super cheap in the US? In the UK, a 6258 0.64 T25 and a G25-550 0.49 T25 are within ~$100 of each other, hence my interest!

At least in the US EFR pricing swings around randomly. I have seen brand new ones for as low as $1150, and as high as $1700 all within a year from the same vendor.

With the t2 exhaust housing the cheapest G25-550 I can find is over $23xx. Once you factor a quality BOV into that range ($100-$250) to equal the EFR in parts. That price difference is huge to me.

I am actually checking on G25-550 pricing from a few of my sources. I may pick one up later this year to try out against a 6258 and 6758.

Massive difference in pricing.

In central europe a 6258 is ~1600€, so is a G25-550.
Hopefully someone pulls the trigger on these new garrets, i'm so interested in this.

Sadly there is no T25 flange on both sides of the exhaust housing :(

Never mind that you'd need to go deep into the Mazda engine to get it up to that level. Or are you talking about swapping the Ford engine into a Miata?

^^ He is more referring to the turbo'd capability on a relatively small displacement engine

I was trying to make the point that the turbo looks like it has potential, if it can spool that well but make good power up top on a 1.6 Sigma, then it could be a great performer on a BP.

But also, that entire engine/turbo setup on that fiesta would be a really nice drop in too. Should be much lighter than an MZR (and much lighter than a BP) but still 455bhp on pump fuel.

Well I purchased a G25-550 today with t a T2 housing. I should be doing some BP testing, but really it is for my NC.

Awesome man looking forward to seeing how it does.

T2 housing is on back order. No idea on ETA for shipment to me at the moment. I am very interested in if it fits on a FM/Begi manifold and has down pipe clearance in the back.

I don't see why it wouldn't it's basically the same physical size as a 2554/2560/2860/2867/2871

Mike at Blouch Turbo is working on machining the G25-550 CHRA to the legacy turbine housings. That's a pretty appealing path for those who already invested $$$ in GT/GTX setups. I spoke to him a few months ago and he said it looks very promising. If forced to start over from scratch I'd go EFR.

There are really two separate issues, technology, and quality control.

Garrett in the US have a very long history of turbocharger and small gas turbine engine development, and their turbochargers have been very successfully mass produced and marketed worldwide.
In recent times, Garrett management decided to move all turbocharger manufacturing to China, to reduce manufacturing costs. That did not all happen in one day, but all Garret turbochargers are now sourced entirely from within China.

Most if not all of the very experienced Garrett engineers were offered jobs in China, but very few liked the idea of moving their entire families to China, learning a new language, and the huge culture shock involved in moving to a very strict communist country. So all the vast pool of turbocharger technical knowledge, experience, and expertise built up over decades remained in the US.

Borg Warner saw that as a great business opportunity and took on the very best Garret turbocharger engineers, and started some very fresh and up to date new turbocharger designs. All the decades of experience and knowledge went into these new Borg Warner turbos which are, or probably soon will be the leaders in quality and performance worldwide.

Meanwhile, the Chinese really struggled with quality control and metallurgy, with the existing but rapidly dating original Garret designs. Some of the original early Chinese Garrets gained a horrible reputation for dramatic early failure, but they seem to be learning. The greatest worry is not so much the genuine Chinese Garrets, but the fake Chinese back yard Garrett $200 dollar clone copies. Plenty of you-tube and e-bay horror stories about those.

The problem I see it, is how do you know your shiny new Garrett turbocharger is a genuine Garrett, and not a fake copy ? As they all come from China now, its difficult to know.

At least you can be certain that Borg Warner EFR turbocharges were manufactured in the US from proper materials, proper tolerances, with up to date ISO quality control standards.
I believe the Chinese are very good at copying things, but not so good at original research and development, and will gradually fall further and further behind unless they can use industrial espionage to steal the latest Borg Warner technology, without truly understanding it. That is how I see the future,

I believe Garret made a very big mistake moving to China, they lost all their engineers.
Even if Trump makes it worth their while to return Garrett turbocharger manufacturing to the US, I believe they will never be able to ever regain the place they originally had.

Nice story, but in 5 years time Garrett and Borg Warner will go bankrupt.

I hope you are making a joke. I can't see BW or Garrett going bankrupt soon.

Yes, the large asteroid that will strike the earth in 3 years will bankrupt many businesses by 5 years. Little can be done to save them.

The batteries would be their end unfortunately. Hope I'm wrong.

Lol you do realize internal combustion engines are still gonna be around for a long time in spite of electric cars right?

Garrett still make most of the really small gas turbine engines (less than 2,000 Lbs thrust) used in corporate jets and also the small gas turbines for helicopters. Its very similar technology to turbochargers, those are all still made in the US.

Those will still be flying, even if we are all driving electric cars and bicycles.