IHI

I thought I would be flamed, marked as newbee and so on. Are you seriously saying that if you do a side to side test with the smallest B&W and the gt2554, the B&W would outperform the T25 in any way?
I agree on the extra bits. I like the all-in-one solution. And it is worth the extra investment.
Would this turbo bolt on to a s4 header and still clear the PS and AC?
Next problem is the downpipe. Is it to far backwards to get it right?

viperormiata

iTrader: (24)

Who knows, honestly. These turbos are very new and I haven't seen what they do on a B6 or BP. Will a B1 frame EFR spool as fast as a 2554? Maybe not, but they will be capable of making over 100hp more than a 2554.

True. But then again it really depends on what equipment you are running with already. I have external waste gate and a nice blow off valve, so do I need to get rid of those for a EFR when I can run a compact gt3071 and call it a day? Just things I will need to figure out.

If it's a t2 foot print, it will work just fine. But the turbine outlet on the EFR turbos are all 3" v-band, so the S4 down pipe will need to be modded. Also depends on the over all length of the turbo for accessory clearance.

MazDilla

iTrader: (7)

Attention **** and Man-******:

Photographic evidence has surfaced of an EFR turbo installed on an NA Miata. The owner may or may not be an engineer at Borg Warner.

I am stalking have attempted to sodomize contact the aforementioned individual. I am certain he will respond positively to my bribe gift of tentacle rape **** a bag of Cheetos.

That is all.

Nagase

iTrader: (6)

Followed up with an email to Full Race about that Miata as well, as well as poking them for updates. It's been two months since I last spoke to them.

Savington

iTrader: (31)

I have been discussing EFR testing on a Miata with an unnamed individual for about a month now. He asked me not to post any of his findings publicly. I will post more when I can.

chokeasphyxia

iTrader: (8)

No ones mentioned the EFR 6255, too small?

miatamike203

Found another place to get the efr turbos.

http://www.himni-racing.com/index.ph...4du6rol0h80qh7

bbundy

It wouldn’t surprise me it this thing would make 40 or 50 more hp and spool ~600 rpm sooner than my GT3071R, Have better transitional response as well. Damit I wish I was in need of a new turbo now instead of a year and a half ago.

Anybody want to give me one and Ill test it?

Bob

MazDilla

iTrader: (7)

I'd say you're pretty close Bob.

Faeflora

iTrader: (2)

I have been having a discussion pertinent to this thread with an unamed individual for a good amount of time. I however, am not at liberty to discuss any of this thread-relevant information that you might be interested in. I hope this helps.

Noice. If anyone noticed, they also sell the twinscroll housings for the GTX. Now that would be a decent showdown.

Nagase

iTrader: (6)

Check that out. They sell twinscroll housings for the 6258... Hmm.

viperormiata

iTrader: (24)

Yes, but it's a T4 foot print and .92 a/r

.....and that makes it nearly $1700 dollars.

MazDilla

iTrader: (7)

Care to elaborate?

miatauser884

iTrader: (11)

I'm sure this isn't the model that is being discussed, but someone mentioned wanting a S252. I cam across this site, and the $584 price tag seems good.

http://www.diesel-plus.com/dd_turbo.cfm?npid=9776

Faeflora

iTrader: (2)

What is your HP goal Nagase?

viperormiata

iTrader: (24)

http://www.himni-racing.com/index.ph...4du6rol0h80qh7

Follow that link and you will see a drop menu to select turbine housing.

Nagase

iTrader: (6)

I know, I know. I wonder if there's any effective difference in spool between the .64 and the .92 if one is twin scroll though.

yank

iTrader: (1)

Got an email from Full-Race today saying the 6255 is now discontinued because the 6258 made more power with almost the exact same response time. Full race gets another shipment of 6258s in next week and one of them is mine.
I had a precision 5130 on pre-order since November 2010. I called today and they still had no ETA so i canceled my order and went with BorgWarner instead.

musanovic

iTrader: (2)

1.22 exhaust AR. Good luck. ....

Savington

iTrader: (31)

With twin-scroll, you basically have to throw out your pre-conceived notions on A/R sizing. You can't make a good comparison between a single and twinscroll housing, even if the TS is much larger.