2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

s4 and s5

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Old Apr 7, 2003 | 10:17 PM
  #1  
Element's Avatar
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From: Grand forks
s4 and s5

if you have a s4 with no engine how hard is it to put in a s5 j spec
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Old Apr 8, 2003 | 04:49 PM
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From: Grand forks
ok so everything is the same except a different intake and manifold right?
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Old Apr 8, 2003 | 04:50 PM
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From: Laredo, Tx
well I belive you need to get the proper injectors and ECU
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Old Apr 8, 2003 | 04:56 PM
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From: Mars
Swap over a few electronic parts, block a few other things off and you are good to go.
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Old Apr 8, 2003 | 05:00 PM
  #5  
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From: Rohnert Park CA
Swap the front cover, swap the OMP, swap the entire (from the throttle body back) intake and all the sensors.
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Old Apr 8, 2003 | 05:03 PM
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From: Mars
If you are going to premix cant you just keep the s5 front cover and block off the electric omp?
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Old Apr 8, 2003 | 05:08 PM
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Yeah I reckon
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Old Apr 8, 2003 | 05:09 PM
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cant use the s5 ecu then
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Old Apr 8, 2003 | 05:09 PM
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From: Laredo, Tx
beat me to it.
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Old Apr 8, 2003 | 05:21 PM
  #10  
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From: Grand forks
what is it about the s5 that gives it more horse power and can i swap some of those parts onto an s4
this is a TII by the way
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Old Apr 8, 2003 | 05:27 PM
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S5 have lighter rotors I believe and run at higher compression. I'm sure there are a few other things too.
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Old Apr 8, 2003 | 05:35 PM
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you need to rewire the dash harness for the s5 ecu. Not worth the effort
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