Direct bolt-on turbo (ko4 replacement)
(inside joke)
EFR spools up about the same as a 2871 BNR or the WR2 but IMHO it has more top end flow as it is more efficient at higher compressor speeds at least vs the BNR never seen a log of a WR2 car or a compressor map of a WR2. If I still had my Balt I would put a EFR on it in a heart beat.
Thread Starter
Senior Member
iTrader: (3)
Joined: 07-24-11
Posts: 2,983
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From: Bradenton, FL.
How much lag is on the 6758, and what rpms are ideal to keep the redline, like 7k?
is there a possibility that the pwerks precision wr-2 is less laggy, which meaning has more torque because it is smaller?
is there a possibility that the pwerks precision wr-2 is less laggy, which meaning has more torque because it is smaller?
Senior Member
Joined: 08-11-08
Posts: 3,888
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From: San Diego
The 6758 is close to stock boost, nothing noticeable. Its capable of carrying power up to 7k probably a little more. I can't really speak much for the WR-x from Pwerks besides using great hardware. I wanna see the meth or Ethanol runs with the turbo.
Senior Member
Joined: 03-05-11
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From: Encino,Ca
I really can't wait to build the bitch up and rev up to 7.5k. I wanna see this turbo work! LOL
Senior Member
Joined: 07-25-08
Posts: 12,450
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From: Florida
Spools to 22 psi by 3600 and 27 psi by 4000. Seems to hold power well past 7K. By 7500 it will have dropped off a little.
Senior Member
Joined: 07-25-08
Posts: 12,450
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From: Florida
FF-ace has a 5857 on his car with a ZZP header and it made only 430 whp and only 360 wrtq on 24 psi on E-47 and meth. He has a MBC so the only control I have is timing PE and cams no boost control on my end. I was disappointed but if he cranks it up to 33 psi he should see well over 500 whp. It spools 400-500 RPMs slower than I thought it would as well.
