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EFR to GTX Comparison

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Trying compare the EFR range to the GTX3071R and GTX3076R sizing.

 

What is comparable to these sizes in the EFR range of turbos and also dyno sheet differences.

 

Looking at twin scroll

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I think the efr6758 is a comparable turbo to the gtx3071.

 

Doubt it. The 6758 is way smaller and the GTX3071 makes a lot less power.

 

You'd be looking at the B2 framed turbos. The EFR7064 vs GTX3071 and EFR7670 vs GTX3076

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I think the EFR 7163 is more like the 3076. 7163 does 350-380kw depending on how well it's setup and what dyno

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They aren't really comparable

 

If you compare power the EFR will be more responsive than the GTX of the same power and if you compare response the EFR will make more power.

So it really depends on what your interested in?

 

 

Read away;

http://www.sau.com.au/forums/topic/341890-borg-warner-efr-series-turbos/

Edited by D_Stirls

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Iv got an efr 7670 0.92 A/R Twin scroll T4 turbo I'm selling at them moment PM Sent

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I think the EFR 7163 is more like the 3076. 7163 does 350-380kw depending on how well it's setup and what dyno

 

Interesting info. I have been thinking about going T4 Twin scroll EFR on my S15... either a 6758 or 7163.... REALLY don't need/want 350+kw. So I'll go with the hopefully more responsive 6758. Hoping for full boost at 3500rpm and ~300rwkw. Poncam, 2000cc injectors, z32, nistune. Any thoughts nicknack?

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What is the size EFR recommended for SR20DET to make 380 rwkw on E85 with not screwing the shit out of the turbo

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"6262" refer below from Forced facebook page..

 

Mad scientist Trent from Chequered Tuning just finished tuning one of our customers cars. We finished Nitesh's car last year with a full house Forced Motorworx built motor with all the usual quality bolt ons and was running a low mount t67 making 350kw. But when he told us this year he wants more power we told him his crazy lol, he wouldnt listen.......Its now sporting a 6boost manifold and a Precision 6262.

This morning it went back on the dyno at Chequered tuning and spat out a crazy 416kw on 28psi.

This is now the most powerful SR20DET i have built in the 14 years i have been building them.

Top effort as usual Trent and Nitesh well enjoy lol

 

https://www.facebook.com/pages/Forced-Motorworx/340693932620841

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From what I've seem chequered tuning results are noticeably higher then the rest of Ausie numbers. Possibly they are much better but I believe that their dyno is just much happier.

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7670-SR22.jpg

 

EFR 7670 on a 2.2L SR from memory it was at 25 psi

 

11033188_10152737100258443_3923626565744787056_n.jpg

C's garage s14 drift car with a 7670 and 450rwkw.

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"6262" refer below from Forced facebook page..

 

 

You do realise this is a Precision 6262, which is roughly the same size as a GTX3582

 

What are you trying to achieve, the tatters of results that seem to be available on the internet suggest that the BW stuff is slightly more response and much better feel on the road (which could just be hype)

 

All in all i dont think the difference in a GTX or an EFR of the same size will be life changing. Also i think you have to consider what boost level your going to run, The 7670 compressor peaks at ~45psi Where as the GTX Peaks at ~38psi.

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