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Old 09-17-2013, 11:04 PM   #451
3mlwhly
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Wow are the big numbers from efr
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Old 09-17-2013, 11:38 PM   #452
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Quote:
Originally Posted by 3mlwhly View Post
Wow are the big numbers from efr
Not really all that big numbers wise. Check out the most recent version of the compressor map, I would expect to hit 480 whp on a rwd car on e85 with one now, 450 on e85 on a subaru.
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Old 09-18-2013, 06:04 AM   #453
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Quote:
Originally Posted by RobSTI89 View Post

Me-6758 + blouch 20gxtr + stock sti
Were these all on the same car, same setup?

Would be nice to see ALL of this plot. It looks like the pulls were definitely started at different RPMs. Boost and AFR would definitely add to comparative data. What exhaust housings were on the BW & Blouch?
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Old 09-18-2013, 07:17 AM   #454
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Different cars same dyno. All cars started at 2400rpm.

Blouch 20gxtr is a 8cm on a 2012 sti with tmic built bottom end stock cams.

So it has a tmic and dual avcs to help spool and didn't even come close.

EFR FTW
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Old 09-18-2013, 07:17 AM   #455
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The 6758 can only be had with the 0.64AR T2 flanged IWG housing currently. In a little bit you should be able to order it with the bigger T4 twin scroll housing, but I really dont see how there would be any gains going to the bigger housing.
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Old 09-18-2013, 07:29 AM   #456
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The bigger compressor housing will give you more CFM`S at higher rpmīs.
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Old 09-18-2013, 07:38 AM   #457
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The bigger compressor housing will give you more CFM`S at higher rpmīs.
Obviously. But right now there isnt a bigger compressor that fits in the stock location, with the 7163 comes out there will be, and currently BW has said that one will come with both the .64ar T2 housing and the TS T4 housing. I expect that the T2 housing will actually have an impact on max power with the 71mm compressor, I don't think it has an impact on the 67mm compressor.
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Old 09-18-2013, 08:04 AM   #458
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Quote:
Originally Posted by RobSTI89 View Post
Different cars same dyno. All cars started at 2400rpm.

Blouch 20gxtr is a 8cm on a 2012 sti with tmic built bottom end stock cams.

So it has a tmic and dual avcs to help spool and didn't even come close.

EFR FTW
OK, thanks.

AFR, boost and fuels?

Any way you can lay the stage II over that graph too? Make for a much better comparison that stock
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Old 09-18-2013, 08:25 AM   #459
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I am going to make my own thread this weekend I don't wanna clog this one up. I will have 1/4 miles times too.

I will have tuner get me some more graphs too.

Rob
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Old 09-18-2013, 10:46 AM   #460
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Thanks for the influx of data, Rob.

That 6758 is looking pretty awesome, and I can't wait to see some comparisons between 6758 and the new 7163 once someone finally gets their hands on one!
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Old 09-18-2013, 10:58 AM   #461
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Well maybe full race will let me test one and we can compare them !
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Old 09-18-2013, 11:00 AM   #462
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Subscribed!
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Old 09-18-2013, 01:26 PM   #463
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Yeah Rob I think your car is better built and setup for a 7163 with the cams and fullly built head and all. Also id bet that with stock heads and cams the 6758 would spool just like stock and would hold 24-25psi all the way thru redline. This should have no problems making 450whp on good E85, 25psi, and all the normal bolt ons

Whats the news on the 7163 we were supposed to hear this past weekend or this week?
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Old 09-18-2013, 07:13 PM   #464
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Quote:
Originally Posted by RobSTI89 View Post


Waiting for email digital copy of graph best I have. That shows a 2012 sti stage 2 and my car.
This matches with my experience in the EJ207. I tuned my car (EFR6758) and this summer I was able to tune as stock turbo vf30 ver 7 and the spool is very similar between the two. After the turbos are spooled the similarities end. The 6758 flows a TON more than a vf30. Nothing comes close to the spool for power, in my experience.

Last edited by Concillian; 09-18-2013 at 08:00 PM.
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Old 09-26-2013, 10:18 PM   #465
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Originally Posted by RobSTI89 View Post
I am going to make my own thread this weekend I don't wanna clog this one up. I will have 1/4 miles times too. I will have tuner get me some more graphs too.
good stuff rob! post a link when you get the thread online

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Originally Posted by Concillian View Post
This matches with my experience in the EJ207. I tuned my car (EFR6758) and this summer I was able to tune as stock turbo vf30 ver 7 and the spool is very similar between the two. After the turbos are spooled the similarities end. The 6758 flows a TON more than a vf30. Nothing comes close to the spool for power, in my experience.
thanks for following up with a long term review - I love hearing from customers a few months later that your still in love with the setup

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Originally Posted by Leafy View Post
Not really all that big numbers wise.
EFR's have never been a "big dyno numbers" turbo... Area-under-the-curve and response is where they excel


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Originally Posted by NA STI View Post
Whats the news on the 7163 we were supposed to hear this past weekend or this week?
as usual, BW wont make any promises on delivery dates for the 7163. Demand is high and production is not huge, so we aren't making any announcements anywhere else online... if youre on the reservation list you will get a call as soon as we have confirmation from BW the units are on the way. However we curently have the 6258, 6758, 7064, 7670, 8374 and 9180 all in stock and they are no slouches !!


Quote:
Originally Posted by Leafy View Post
right now there isnt a bigger compressor that fits in the stock location, with the 7163 comes out there will be
Quote:
Originally Posted by RobSTI89 View Post
The bigger compressor housing will give you more CFM`S at higher rpmīs.
Leafy and rob, you guys are confused. The new larger 0.80 a/r housings that come out next year are hotside turbine housings only. There was no change to compressor housing - all B1 EFR turbos use the same part (6258, 6758, 7163). The 7163 will only available with the larger 0.80 a/r turbine housing only, it will not be available as 0.64 a/r
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Old 09-26-2013, 10:59 PM   #466
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I know the compressor and center housings are the same between all B1 frame turbos, but last I heard the 7163 was coming out with both turbine sizes (.64AR SS and .92AR TS). Will the bigger turbine housing (.80AR) have the same form factor? IE if you already have a 6758 setup, will the 7163 be plug and play?

And whats the deal with the .92AR Twin Scroll housing?
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Old 09-26-2013, 11:18 PM   #467
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the B1 EFR turbos -- such as 6258 and 6758 are singlescroll 0.64 a/r only. They have the identical form factor to 7163 singlescroll 0.80 a/r, all are plug-and-play for one another.

0.92 a/r twinscroll is only for the B2 EFR turbos. i loooove my 8374 with this housing

there will be a 0.84 a/r twinscroll for the B1 turbos eventually, but we have no clue how far out BorgWarner-time is with that... could be a number of months
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Old 09-26-2013, 11:20 PM   #468
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Ah ok. BW really needs to update their site, it still shows the B1 frame turbos with the .92AR TS housings as possible. Of course it also shows the 6255 as a thing too.
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Old 09-27-2013, 04:21 PM   #469
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Originally Posted by Leafy View Post
Ah ok. BW really needs to update their site, it still shows the B1 frame turbos with the .92AR TS housings as possible. Of course it also shows the 6255 as a thing too.
i will relay the message

Quote:
Originally Posted by KillerBMotorsport View Post
Were these all on the same car, same setup? Would be nice to see ALL of this plot.
hey hey - these EFR turbos could work well on your killerB turbokits too
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Old 09-27-2013, 04:36 PM   #470
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Ahh, but the KB low mount kit is setup for a T3 twin scroll.
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Old 09-27-2013, 04:38 PM   #471
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^^nothing a T4 flange cant solve
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Old 09-27-2013, 04:39 PM   #472
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And needing to cut 3" off the down pipe and use the GT3" v-band.
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Old 09-27-2013, 04:47 PM   #473
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1.05 a/r external WG borgwarner EFR turbos do not require the downpipe to be shortened... thats only if you are using the IWG

also - all EFR turbos use the same vband as the 'GT30/35/40 3" vband' (which is the same as Tial)
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Old 10-01-2013, 12:17 PM   #474
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Date on 7163?

So really, is Turbo Inlet size negligible?

Will the 7163 only be a 2.5 inch?

Im looking to purchase supporting mods now so I need to pick a good turbo inlet/intake.

Also why is the stock location kit over $1500 when it is essentially a glorified Downpipe(Catless) and up pipe? I am not trying to complain as much as I am trying to find an explanation of costs

Last edited by Obababoy; 10-01-2013 at 12:50 PM.
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Old 10-01-2013, 01:58 PM   #475
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there is no "answer" to the question of whether inlet size is negligible, for some turbos which can enter the surge region - yes it matters. the B1 EFRs were designed with extremely wide comp maps and surge areas far from operating points, such that it doesnt benefit anything to have a larger comp housing

7163 production is going on through october. We are not going to list them on our site until the reservation lists are filled, too many phone calls about them as it is. people on our reservation lists will be getting the turbos first, thanks everyone for your patience still a few weeks away but its happening. I will ask if i can post a couple photos

btw all the other EFR turbos are currently in stock and those 6758s haul the mail!! dont underestimate it
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