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JCW with S Turbo

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Old Nov 5, 2019 | 11:35 AM
  #1  
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minimesd
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JCW with S Turbo

T
 

Last edited by minimesd; Jan 10, 2020 at 10:59 PM.
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Old Nov 5, 2019 | 11:40 AM
  #2  
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Originally Posted by minimesd
Hi everyone.

Picked up a 2009 JCW at an auction today. After a deeper examination it looks like the turbo was replaced with a turbo from a MCS.
Any idea on how this will compromise performance?

Thanks!

M
nothing bad will happen but you will be down on power.
I sell turbos that are slightly larger than JCW and paired with my ECU tuning you will gain 70hp

Mario
mQubed Motorsport RPM Power Tuning
 
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Old Nov 5, 2019 | 12:01 PM
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Yeah. Feels like a stock MCS.
 
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Old Nov 5, 2019 | 12:35 PM
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Shouldn't the turbo produce higher boost with the JCW factory tune even if it is a MCS turbo?
 
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Old Nov 9, 2019 | 10:08 AM
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It maybe the wastegate leaking by. My 09 JCW only will produce 10lbs boost.
 
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Old Nov 9, 2019 | 10:18 AM
  #6  
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The markings on the turbo are for sure a standard turbo S. My guess is the prior owner needed to replace the turbo and instead of spending the extra money on a JCW version just used the starndard turbo from an S.

What I don't know yet is if the car has a tune for an S OR a JCW
 
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Old Nov 10, 2019 | 04:22 AM
  #7  
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Are you sure it’s a factory JCW and not an S with JCW tuning kit?
 
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Old Nov 10, 2019 | 07:10 AM
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No. It is a factory JCW. I have the original window sticker.
 
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Old Nov 10, 2019 | 12:04 PM
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My understanding, and I could be wrong, is that the boost targets are the same between S and JCW, but JCW turbo flows better at the high rpms to provide high power numbers.
 
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Old Nov 12, 2019 | 01:05 PM
  #10  
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Gen 2 S boost is 13psi, Gen 2 JCW boost is 19psi...
 
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