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01-24-2011, 04:16 PM | #1501 | |
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This specific comparison was perfectly fair from my point of view. His Garrett turbine housing was a .82 and the EFR is a .83. This test uses the same dyno, same tuner, same fuel, same manifold with just a blockoff plate for the IWG. I've been corresponding with this specific customer and after putitng many miles on this weekend - he is stating that although the spool time doesn't look considerable on the dyno, there is far less lag on the EFR when driving, a "night and day" difference. It is understood that a dyno is the worst way to show gains in response or reduction in friction/inertia... this test is purely comparing the compressor wheels to each other. The compressor wheel does whatever the tubine wheel tells it to do, so the quicker the turbine wheel responds the quicker you will get boost. No other turbo on the market has anything like this on the turbine side to lower the rotating assy's inertia. and this is only at 15psi, when he gets to 30psi the gap will get much larger..
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01-24-2011, 05:00 PM | #1502 | ||
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Member#: 36033
Join Date: Apr 2003
Chapter/Region:
SCIC
Location: Tuning Lab
Vehicle:CEO PhatBottiTuning 2006 STi GTX3582 + Meth |
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And based on that could we assume that the gtx35 would overlay the efr8375? isnt it more impressive that the lesser flowing gt35 is making the same power as a turbo thats rated higher and has a "better" ratio? |
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01-24-2011, 05:09 PM | #1503 | ||
Scooby Newbie
Member#: 166264
Join Date: Dec 2007
Location: Netherlands, Europe
Vehicle:1974 VW 2.2ltr 7670 402 WHP @ 30psi |
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We can keep doing this theoretical games all day. I'll rather wait for some more real world tests like above though.. |
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01-24-2011, 05:17 PM | #1504 |
Scooby Guru
Member#: 36033
Join Date: Apr 2003
Chapter/Region:
SCIC
Location: Tuning Lab
Vehicle:CEO PhatBottiTuning 2006 STi GTX3582 + Meth |
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01-24-2011, 05:52 PM | #1505 | |
Scooby Specialist
Member#: 159738
Join Date: Sep 2007
Chapter/Region:
SCIC
Location: SGV
Vehicle:2004 WRB STi 620awhp OFCD V3, FR TS, BW8374EFR |
Quote:
Borg Warner is less plus you saves you on a bov and electronic boost solenoid for the EWG version. A couple hundred more for the IWG version saves you from purchasing 2 external waste gates and dump tubes saving several hundred more. Not to mention the BW has a ss investment cast turbine housing, redesigned ti-alum turbine wheel, dual piston ring oil seal, race duty steel caged ceramic bearing cartridge, built in oil restrictor, FMW extended tip comp wheel, better matched turbine to compressor wheels than the Garrett GTX series turbos. Last edited by methaddict; 01-24-2011 at 06:13 PM. |
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01-24-2011, 06:07 PM | #1506 |
Scooby Specialist
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Join Date: Sep 2005
Chapter/Region:
W. Canada
Location: Winnipeg
Vehicle:2013 STI GR White |
Well, you guys are at least entertaining.
It is hard to compare one comp wheel to another, as the BW shine in the higher comp areas, and for our cars most won't be seeing much over 25-30 psi. At any rate, you guys all seem to miss the big deal here. The substantial loss of mass in the turbine wheel. That is what is going to make these turbos drive soo much better. That is what will allow a bigger EFR (which we will need due to lower PR on our cars) to feel like a smaller turbo. In all honesty, I think the GTX wheels are a better match for our cars (2.5 liter) but until Garrett comes out with a turbine wheel that is this light (and a proper TS IWG) they are lagging (pun intended) behind. |
01-24-2011, 07:42 PM | #1507 |
Scooby Guru
Member#: 36033
Join Date: Apr 2003
Chapter/Region:
SCIC
Location: Tuning Lab
Vehicle:CEO PhatBottiTuning 2006 STi GTX3582 + Meth |
My gtx35 with 0.63 tial should be in this week. Maybe I'll do some testing then sell it and get an efr .
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01-24-2011, 07:58 PM | #1508 |
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Join Date: Mar 2005
Chapter/Region:
South East
Location: Raleigh, NC (Brier Creek)
Vehicle:2005 Legacy GT OBP |
my e-turbine is bigger!! lol
c'mon subie numbers pleeeaase!! |
01-24-2011, 08:14 PM | #1509 |
Scooby Guru
Member#: 134949
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VIC
Location: Vancouver, BC
Vehicle:'07 SWP STi Instagram | arthurlam89 |
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01-24-2011, 09:06 PM | #1510 |
Scooby Newbie
Member#: 215369
Join Date: Jun 2009
Chapter/Region:
NESIC
Vehicle:'07 STI - Alice Urban Gray Metallic |
hey alcoolaid , I was talking to martinsti05 about his s360 and I like his numbers, I wanted to ask you too, I saw a few videos of you on youtube, you have an s360 as well right? is yours with ett? what kind of numbers did u make on pump gas? whats your best time at the track? pump and race gas or whatever u have please
thanks! |
01-24-2011, 09:41 PM | #1511 | |
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01-24-2011, 09:42 PM | #1512 | |
Scooby Guru
Member#: 134949
Join Date: Dec 2006
Chapter/Region:
VIC
Location: Vancouver, BC
Vehicle:'07 SWP STi Instagram | arthurlam89 |
Quote:
Pump gas I had it up to 583whp sae corrected. I was trapping 127mph @ 11.2 on 18" rims w/ street tires. Only made 2 passes on 2 different days. Mostly road course car not so much into the drag racing. |
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01-24-2011, 09:44 PM | #1513 | |
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01-24-2011, 11:00 PM | #1514 | |
Scooby Specialist
Member#: 145145
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MWSOC
Location: Rockford, Il
Vehicle:2006 wrx STi |
Quote:
583 on straight pumpgas?? Yowzers... |
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01-24-2011, 11:36 PM | #1515 | |
Scooby Specialist
Member#: 35276
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Chapter/Region:
RMIC
Location: Salt Lake City, UT
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01-24-2011, 11:52 PM | #1516 |
Scooby Guru
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VIC
Location: Vancouver, BC
Vehicle:'07 SWP STi Instagram | arthurlam89 |
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01-25-2011, 12:04 AM | #1517 |
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Member#: 32669
Join Date: Feb 2003
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SCIC
Location: Woodland Hills
Vehicle:2007 2.34LR, EFR7670 LINK G4+ hybrid STi |
I agree with that dude. I'm starting with nothing again so the added features of the EFR like the boost control solenoid, BOV, and two waste-gates I didn't have to buy saved me some loot. Just put it this way, the EFR 7670 kit I have coming with reverse manifold FMIC kit was a good bit cheaper than what you could build a comparable kit with the old 75-70 on there website now. I was already sold on the S256 but that sealed the deal for me. Borg Warner EFR FTMFW!!!!!!!
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01-25-2011, 12:04 AM | #1518 | |
Scooby Newbie
Member#: 215369
Join Date: Jun 2009
Chapter/Region:
NESIC
Vehicle:'07 STI - Alice Urban Gray Metallic |
Quote:
-Cory |
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01-25-2011, 03:57 PM | #1519 | |
Scooby Newbie
Member#: 166264
Join Date: Dec 2007
Location: Netherlands, Europe
Vehicle:1974 VW 2.2ltr 7670 402 WHP @ 30psi |
Quote:
I'll say it again then: It would be nice if somebody would have some sort of standard or measuring method to show transition and boost recovery 'values'. My old DOM3 with 8cm² turbine housing did still take a while to get to full boost after a shift. For example here's a log of a 1/4 mile run I did, shifts from 2-3 and 3-4. It almost takes half a second after 100% throtte is back to get to full boost again. In a drag race, I think thats quite a long time... Car drives from right to left on these logs: I hope my 'non-EFR' 84-75 will not be worse in that department, time will tell though . |
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01-25-2011, 04:05 PM | #1520 |
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Vehicle:7/2 STi/WRX wagon SWP/AW |
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01-25-2011, 04:18 PM | #1521 | |
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VIC
Location: Vancouver, BC
Vehicle:'07 SWP STi Instagram | arthurlam89 |
Quote:
yeah on 17" drag radials i'll definitely go 10's fully ported heads, 276/272 kelford avcs cams, supertech +1mm valves, supertech dual valve springs |
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01-25-2011, 05:08 PM | #1522 |
Scooby Newbie
Member#: 166264
Join Date: Dec 2007
Location: Netherlands, Europe
Vehicle:1974 VW 2.2ltr 7670 402 WHP @ 30psi |
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01-25-2011, 05:39 PM | #1523 |
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I plan on logging my drag races to make judgements on boost recovery
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01-26-2011, 09:49 PM | #1524 |
Top Scoob 019
Member#: 43630
Join Date: Sep 2003
Location: Down Under
Vehicle:2004 GT40R-built 2.5 604 whp @1.8 BAR on VP109 |
Interesting discussion.. Im hoping to have my 8374 t/4 1.05 ext wastegate arrive somewhere in Feb for a tune in early March.
The setup will be a direct comparison to my current GT40R 1.06 ext setup on a built 2.5 ltr... |
01-26-2011, 10:16 PM | #1525 |
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Vehicle:07 FPgreen 7.37@95 WRX VF39+E85 12.0, 121mph |
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