any way to tell?
02-02-2009, 02:36 PM
#2
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if they are stock motors one would be the mechanical linkage to the throttle body for the OMP, s4 has mechanical and s5 is electric, another easy one is a plastic thermostat housing on a s5 versus a aluminum one on a s4. There are aftermarket housings sold but if the motor is stock thats a quick easy thing to check.
s4 8 blade fan, s5 10 blade fan.
those aare 3 quickies you can easily see.
s4 8 blade fan, s5 10 blade fan.
those aare 3 quickies you can easily see.
02-03-2009, 10:59 PM
#5
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Originally Posted by j9fd3s' post='915889' date='Feb 2 2009, 04:12 PM
S5 has the knock sensor holes above the spark plugs.
On S4, there will be a boss on the center iron near the oil filler neck, facing forward, thats tapped for the knock sensor.
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