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ineed some clarification, i need to know what is obd and what the diff between obd2. iknow alil somthing about vw but im still new to the scen but dont want to look stupid since idont know really the meaning of this or "water cooled".
 

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On Board Diagnostics. OBDII is just an updated version w/ more sensors.
Edit: Didn't see watercooled
Watercooled means that water is pumped throughout the block and head mixed with coolant instead of air as the older engines were. Watercooling involves a radiator, water pump, ect. It cools better then Air and is able to maintain a faily steady temp. range in the engine due to waters unique properties.

[ February 11, 2004: Message edited by: 98a4 ]
 

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OBD2 means more work for an engine swap. OBD1 is generally the better of the two.

'93-'95 OBD1, '96-UP OBD2
 
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