Be careful.  Not all 90-91 Jetta's have a true turbo diesel engine.  My
91 Jetta is an ECOdiesel which has a low pressure turbine that is there
to put a little more air in the engine for cleaner burning.  7 HP gain
over a standard 1.6L diesel.  High pressure turbines have a boost
enrichment valve on the injection pump and a pop-off valve to relieve
intake air pressure that are not found on the ECO version.  The high
pressure turbo charged engines put out 69 HP.  Those 10 horses  make a
big difference.
TEMiller

Mark Cumnock wrote:

>Just look for a 1990-1991 turbo diesel jetta
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