The ST does not use a k03.

- Drew

You can usually figure that you can increase your stock hp number by about 50% before stuff starts to let go (powdered metal rods and hypereutectic pistons). On a stock ST rated at 250 hp, you could take it as high as 375 flywheel hp (330 at the tire). My car has been 57% over stock hp on the stock rotating assy for 80,000 miles (523 hp vs 300 stock)...I haven't been nice to it in any sense of the word. I'm guessing the block itself will hold over 500 with forged rods and pistons. The trick will be tuners figuring out how to make that kind of power reliably with direct injection. It's all in the tune when you get close to that 150% mark. I'm certain that the turbo will have to be bigger than a K03 just based on the compressor map...it chokes out way too soon to support a 2.0L. A K04 is much broader as far as higher flow rates and pressures. I guess it really depends on how many CFM the engine can move, and how much boost Ford wants to throw at it.

It is def not a k03. I would say atleast a K04. I heard rumours Ford has plasma blasted the piston's, cylinder walls. Same technology they lended to Nissan for the GTR. Does anyone know understand this twin scroll technology?

Originally Posted by 02_svt_guy

It is def not a k03. I would say atleast a K04. I heard rumours Ford has plasma blasted the piston's, cylinder walls. Same technology they lended to Nissan for the GTR. Does anyone know understand this twin scroll technology?

From what I understand of my quick googling, plasma coating the pistons and cylinder walls just reduces friction it doesn't make anything stronger.

While it doesnt make them stronger the coating reduces side loading of the piston.

Plasma transferred wire arc thermal spraying - Wikipedia, the free encyclopedia

This is what i found. I remeber reading an article from Nissan when the GTR was first introduced.

There is a post somewhere on the forum showing a graphic of which turbo it is and the power spectrum it can produce. Its second from bottom of borg warners turbos.

Originally Posted by ScorpioWRXST

There is a post somewhere on the forum showing a graphic of which turbo it is and the power spectrum it can produce. Its second from bottom of borg warners turbos.

EFR-6258 thats the 1!

http://www.full-race.com/store/image...content-14.jpg

http://www.full-race.com/articles/efrturbotechbrief.pdf

If anyone wants to know about the NEW and exciting Turbo on our car read the above link in PDF form. Yes it is long but really interesting and informative. Did you know Indy cars use a BW EFR turbo!!