EFR but not EFR
#1
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
So i have been collecting parts for my jeep turbo project and i came across this Borg Warner cobalt ss turbo off an 08 cobalt. At first i was like OMG this is an EFR turbo but the comp wheel is not billet and its not ceramic bearing. The housings make it look like its an EFR but after researching for days just to get the little info there is about it out there it turns out its a Borg Warner LNF turbo. Some places call it a Ko4 as in the audi turbo but who knows.![Giggle](https://www.miataturbo.net/images/smilies/gay.gif)
I added the 2.5" V-band on the turbo inlet as no one make a flange for it but they make the outlet flange.
Here are the pics tell me what you guys think!!!!!!!!!
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/427437_10150887336359012_835234011_12734337_587226538_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/s720x720/416867_10150887336504012_835234011_12734339_1789735100_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/s720x720/430063_10150887336664012_835234011_12734342_46163689_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/418030_10150887336829012_835234011_12734344_368156333_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/427596_10150887336974012_835234011_12734347_1550566925_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/425725_10150887337114012_835234011_12734349_203072542_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/s720x720/428718_10150887337674012_835234011_12734357_460449390_n.jpg)
![Giggle](https://www.miataturbo.net/images/smilies/gay.gif)
I added the 2.5" V-band on the turbo inlet as no one make a flange for it but they make the outlet flange.
Here are the pics tell me what you guys think!!!!!!!!!
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/427437_10150887336359012_835234011_12734337_587226538_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/s720x720/416867_10150887336504012_835234011_12734339_1789735100_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/s720x720/430063_10150887336664012_835234011_12734342_46163689_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/418030_10150887336829012_835234011_12734344_368156333_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/427596_10150887336974012_835234011_12734347_1550566925_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/s720x720/425725_10150887337114012_835234011_12734349_203072542_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/s720x720/428718_10150887337674012_835234011_12734357_460449390_n.jpg)
![](https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/s720x720/418493_10150887337834012_835234011_12734361_1999410087_n.jpg)
#2
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
looks like it should spool fast. I'd definitely give it a shot, looks promising. Those cobalts run stupid high boost on these turbos and make 300ish with bolt ons.
on another note, everyone is raving about the efr and yet not a single friggen person has posted boost plots.
on another note, everyone is raving about the efr and yet not a single friggen person has posted boost plots.
Last edited by 18psi; 03-10-2012 at 10:11 PM.
#8
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
looks like it should spool fast. I'd definitely give it a shot, looks promising. Those cobalts run stupid high boost on these turbos and make 300ish with bolt ons.
on another note, everyone is raving about the efr and yet not a single friggen person has posted boost plots.
on another note, everyone is raving about the efr and yet not a single friggen person has posted boost plots.
Thats why i welded a v band manifold on the inlet.
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