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[Closed] Borg Warner Efr Series Turbos

Lithium

By Lithium,
in Engines & Forced Induction

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bri73y Proficient

bri73y

Posted
Posted

John, what are you you running in your gtr anyway? You inspired me to go twin efr a few years ago but I never really know your whole story

Slightly off topic but some pics from last night's clean. Excuse the shit pics, crap phone and a couple of beers too many!

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Lithium
Lithium

Hi all!   I've not really been active on this forum for some time and although I lurk in to read bits and pieces of interest I don't really think of this as a forum I'm part of but I once was and I di

R32 TT
R32 TT

Haha - yeah it could use some more boost Simon..  I'm sorry I've not put up Motec logs in the past for those who've wanted to see. Back at the time I did a bit of comparing because I did more or

Full-Race Geoff
Full-Race Geoff

mr skidz, your posts are coming off as trolling at this point.  do EFR people go into precision threads and talk about how great their mates setup is, but wont give any details??  whilst complaining t

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bri73y Proficient

bri73y

Posted
Posted

Very nice, that wing is massive, what is it and where did you get it if you don't mind me asking :)

It's a custom job by Andrew at Custom Carbon Creations or CCC. Designed by Scott Beaton from Aero Design, the guy behind the WTAC rules.

I've recently cut it down 100mm each side also, was huge back then!

Did you get the proshonk stuff sorted?

Love the green wheels

Not yet, car is resting until next year now. I've ordered some replacement LCA's and just need to make new hats and dogbones to better space the rotor.

Thanks, matches the green roll cage also (can't really see that in the pics)

Tonba Rising Star

Tonba

Posted
Posted (edited)

No twin scroll? :(

Im thinking about going to a 7163 and getting rid of my oil leaking FP green on my evo as FR have a lowmount kit out/coming out. I believe Geoff has 1 on his evo now.. Id love to hear how thats going and what fitment is like from Geoff. I wouldn't wanna sacrifice any response over the green even though i know its a 6lb bigger turbo..

Do it! The EFR7163 will blow the FP green out of the water....

All though it is a lot of money for not much more top end (if any)... Might be better to look at a twin scroll EFR7670??

Edited by Tonba
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Mick_o Grand Master

Mick_o

Posted
Posted

Haha im pretty confident that the EFR will smoke the HTA. But i dont wanna sacrifice ANY response. Im not after top end at all Alex its the midrange & response i seek :) id also like to stay lowmount.

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Mick_o Grand Master

Mick_o

Posted
Posted

To be honest id be happy with 330-350kw max but i just want the most responsive setup with most area under the curve i can. The green starts moving in lower gears at around 3700 that'd be as laggy as id like.. As you know Point to point there isn't much faster than an evo.. I want to keep to that recipe as much as possible with my car as it suits the style of driving i enjoy most. :)

owen1r Collaborator

owen1r

Posted
Posted

To be honest id be happy with 330-350kw max but i just want the most responsive setup with most area under the curve i can. The green starts moving in lower gears at around 3700 that'd be as laggy as id like.. As you know Point to point there isn't much faster than an evo.. I want to keep to that recipe as much as possible with my car as it suits the style of driving i enjoy most. :)

How about you grab a 7163 or a 7064 and tell me if it's nicer than your GTX3071 :P Then maybe i'll chuck one on my 34...

Skepticism Enthusiast

Skepticism

Posted
Posted (edited)

I've seen a couple of tests where the 6258 doesn't really outspool the 6758 despite the smaller wheel and falling off much sooner. IIRC one comparison was on the ART silvia and the other was a Perrin test.

Given how fast the 6758 spools it doesnt matter too much, but still, anyone know what the deal is?

Edited by Skepticism
Lithium Grand Master

Lithium

Posted
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Posted

I don't know for sure what the story is there, I have seen ones where the 6258 comes on quicker but either way I do know and have before seen dyno plots which don't represent what happens in the real world - at least in terms of response. Might investigate but either way I see no reason in going smaller than a 6758 as a single turbo on something aftermarket

JustinP Mentor

JustinP

Posted
Posted

Is anyone running an EFR8374 with 0.92 A/R T4 twin scroll (internal wastegate) on an RB25/26?

What sort of power could be made with this turbo, WMI setup and other required supporting mods? I have not been able to find much info about actual results with this turbo.

Cheers

Justin

Sub Boy32 Rising Star

Sub Boy32

Posted
Posted

Is anyone running an EFR8374 with 0.92 A/R T4 twin scroll (internal wastegate) on an RB25/26?

What sort of power could be made with this turbo, WMI setup and other required supporting mods? I have not been able to find much info about actual results with this turbo.

Cheers

Justin

I'm running one on an RB30/26 ?

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