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Forced Induction Turbo, Supercharger, Methanol, Nitrous


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Old 04-12-2013, 08:19 AM   #1
dabocx
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EFR series

So ive been reading up on options for my summer build and ive read so much hype on the 6758, 7064. and 7163 efr series of BW turbos and I am wondering why we dont see them used on our car outside of Powerhouse amuse. I keep reading that they are miles ahead of the gt28 gt30?
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Old 04-12-2013, 08:24 AM   #2
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due to size and availability I'd say.
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Old 04-12-2013, 08:47 AM   #3
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Treadstone is using a EFR turbo and so is Crawford.
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Old 04-12-2013, 09:17 AM   #4
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JDL should drive down the street and pick one up from Full race and throw it on their kit to see the diff between those and the 5130 they used......

for science?
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Old 04-12-2013, 09:47 AM   #5
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Treadstone is using a EFR turbo and so is Crawford.
Yep, running one on my car. Still working on the final tuning details, but it's a blast to drive, very quick spool-up!
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Old 04-12-2013, 10:25 AM   #6
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ive read so much hype
There are the key words.
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Old 04-12-2013, 10:36 AM   #7
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There are the key words.
I recall how none were available when they were supposed to be available. Problem with the casting of the housing...and people who ordered 2 years ago or some such were just beginning to get their orders this past summer.
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Old 04-12-2013, 11:18 AM   #8
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I'd love to hear from some of our vendors on things like the availability of these turbos, reliability, performance etc...
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Old 04-12-2013, 12:15 PM   #9
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Yep, running one on my car. Still working on the final tuning details, but it's a blast to drive, very quick spool-up!
I was not expecting someone to run that one. Any chance you have dynos.....
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Old 04-12-2013, 12:29 PM   #10
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As pointed out above, Availability is slim, castings are inconsistent to the point they had to move away from some of the original technology and finish quality due to rampant failures, the exhaust turbines have had a problem staying together aswell, none of these are HUGE issues affecting everyone who buys an EFR.

There is enough negative media out there and not enough positive to get the turbos a real chance to shine, I believe overall they are awesome turbos, but I wouldn't design a kit around them because of little to no interchange with other readily available turbos (as far as packaging) limiting customers overall choices, and not wanting to be committed to waiting on a product with such a varied/unreliable delivery schedule.
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Old 04-12-2013, 01:12 PM   #11
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There's a company out here that i think is planning on making a kit utilizing the EFR but that's really only speculation at this point. The drawback to the EFR is the size to power ratio. EFR's are huge, heavy, and looking at their site down on power to Garrett's and Precision Turbos. They are a neat idea that makes quite a bit of sense, but like has been said, they restrict your choices if you decide you want to go bigger.
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Old 04-12-2013, 01:25 PM   #12
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There's a company out here that i think is planning on making a kit utilizing the EFR but that's really only speculation at this point. The drawback to the EFR is the size to power ratio. EFR's are huge, heavy, and looking at their site down on power to Garrett's and Precision Turbos. They are a neat idea that makes quite a bit of sense, but like has been said, they restrict your choices if you decide you want to go bigger.
Isn't the weight and size due to it being a semi-full package in that you get:

1. Turbo
2. Wasgtegate
3. BOV/Recirc valve

all in one piece? Makes for a DIY turbo kit builder's dream!

If it is not reliable and makes less power than competitors then I don't want it on my car.
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Old 04-12-2013, 01:29 PM   #13
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It may be a DIY dream setup, but the EFR is overly complicated and prone to breaking. I'd also be surprised if the weight savings gained by having everything in one unit would be that much. I have held a smaller EFR unit and then my PT 5558 and the 5558 was substantially lighter...my Tial wastegate and BOV are also pretty light so I dunno how much it would really save.
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Old 04-13-2013, 12:05 PM   #14
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They're great, but I prefer separate, discreet components. Do they make an externally gated version?
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