BorgWarner EFR Turbos - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

DIY Turbo Discussion greddy on a 1.8? homebrew kit?
Sponsored by:
Sponsored by:

BorgWarner EFR Turbos

Old 01-27-2011, 05:51 PM
  #41  
IHI
Junior Member
 
Join Date: Oct 2009
Location: The Netherlands
Posts: 200
Total Cats: 1
Default

Originally Posted by viperormiata View Post
The closest thing to a small frame garrett would be the EFR 6258, and that still blows the 2554, 2560, 2860 and 2871 out the water.
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?
IHI is offline  
Old 01-27-2011, 06:27 PM
  #42  
NB/VVT Connoisseur
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,121
Total Cats: 249
Default

Originally Posted by IHI View Post
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?
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.

Originally Posted by IHI View Post
I agree on the extra bits. I like the all-in-one solution. And it is worth the extra investment.
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.

Originally Posted by IHI View Post
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?
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.
viperormiata is offline  
Old 02-01-2011, 11:50 PM
  #43  
Junior Member
iTrader: (7)
 
Join Date: Feb 2007
Location: Overland Park, KS
Posts: 394
Total Cats: 6
Default

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.
MazDilla is offline  
Old 02-02-2011, 07:18 PM
  #44  
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,805
Total Cats: 0
Default

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.
Nagase is offline  
Old 02-02-2011, 08:32 PM
  #45  
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,001
Total Cats: 1,814
Default

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.
__________________
Trackspeed Engineering
High-Performance Turbo Specialists - Sunnyvale, CA - 650-701-7223 - Email us!
Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
Savington is online now  
Old 02-03-2011, 10:33 AM
  #46  
Junior Member
iTrader: (8)
 
Join Date: Mar 2007
Location: Sarasota, FL
Posts: 331
Total Cats: 0
Default

No ones mentioned the EFR 6255, too small?
chokeasphyxia is offline  
Old 02-03-2011, 12:24 PM
  #47  
Senior Member
 
Join Date: Aug 2009
Location: MONROE CT
Posts: 1,102
Total Cats: 3
Default

Found another place to get the efr turbos.

http://www.himni-racing.com/index.ph...4du6rol0h80qh7
miatamike203 is offline  
Old 02-03-2011, 05:36 PM
  #48  
Elite Member
 
Join Date: Jul 2005
Location: Anacortes, WA
Posts: 2,497
Total Cats: 125
Default

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
bbundy is offline  
Old 02-03-2011, 05:55 PM
  #49  
Junior Member
iTrader: (7)
 
Join Date: Feb 2007
Location: Overland Park, KS
Posts: 394
Total Cats: 6
Default

Originally Posted by bbundy View Post
It wouldn’t surprise me it this thing would make 40 or 50 more hp and spool ~600 rpm sooner than my GT3071R...
I'd say you're pretty close Bob.
MazDilla is offline  
Old 02-03-2011, 06:53 PM
  #50  
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,676
Total Cats: 119
Default

Originally Posted by Savington View Post
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.
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.

Originally Posted by miatamike203 View Post
Found another place to get the efr turbos.

http://www.himni-racing.com/index.ph...4du6rol0h80qh7
Noice. If anyone noticed, they also sell the twinscroll housings for the GTX. Now that would be a decent showdown.
Faeflora is offline  
Old 02-03-2011, 07:06 PM
  #51  
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,805
Total Cats: 0
Default

Check that out. They sell twinscroll housings for the 6258... Hmm.
Nagase is offline  
Old 02-03-2011, 07:09 PM
  #52  
NB/VVT Connoisseur
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,121
Total Cats: 249
Default

Originally Posted by Nagase View Post
Check that out. They sell twinscroll housings for the 6258... Hmm.
Yes, but it's a T4 foot print and .92 a/r

.....and that makes it nearly $1700 dollars.
viperormiata is offline  
Old 02-03-2011, 07:12 PM
  #53  
Junior Member
iTrader: (7)
 
Join Date: Feb 2007
Location: Overland Park, KS
Posts: 394
Total Cats: 6
Default

Care to elaborate?
MazDilla is offline  
Old 02-03-2011, 07:16 PM
  #54  
Elite Member
iTrader: (11)
 
Join Date: Feb 2009
Posts: 2,959
Total Cats: 11
Default

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
miatauser884 is offline  
Old 02-03-2011, 07:17 PM
  #55  
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,676
Total Cats: 119
Default

Originally Posted by Nagase View Post
Check that out. They sell twinscroll housings for the 6258... Hmm.
What is your HP goal Nagase?
Faeflora is offline  
Old 02-03-2011, 07:26 PM
  #56  
NB/VVT Connoisseur
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,121
Total Cats: 249
Default

Originally Posted by MazDilla View Post
Care to elaborate?
http://www.himni-racing.com/index.ph...4du6rol0h80qh7

Follow that link and you will see a drop menu to select turbine housing.
viperormiata is offline  
Old 02-03-2011, 07:34 PM
  #57  
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,805
Total Cats: 0
Default

Originally Posted by viperormiata View Post
Yes, but it's a T4 foot print and .92 a/r

.....and that makes it nearly $1700 dollars.
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.
Nagase is offline  
Old 02-03-2011, 11:35 PM
  #58  
Senior Member
iTrader: (1)
 
Join Date: Jun 2007
Posts: 669
Total Cats: 30
Default Efr

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.
yank is offline  
Old 02-04-2011, 12:12 AM
  #59  
Senior Member
iTrader: (2)
 
Join Date: Aug 2007
Location: North Cackalackey
Posts: 707
Total Cats: 2
Default

1.22 exhaust AR. Good luck. ....
Originally Posted by djp0623 View Post
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
musanovic is offline  
Old 02-04-2011, 05:02 AM
  #60  
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,001
Total Cats: 1,814
Default

Originally Posted by Nagase View Post
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.
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.
__________________
Trackspeed Engineering
High-Performance Turbo Specialists - Sunnyvale, CA - 650-701-7223 - Email us!
Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
Savington is online now  

Thread Tools
Search this Thread
Quick Reply: BorgWarner EFR Turbos


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.