Hit 100,000km today.
Thermostat is playing up again, wont quite stay at 90.
I removed the 02 spacer last weekend and no code until today, now I have the Cat Efficiency code. So I know that with the spacer the difference from 1st to 2nd sensor is too much and makes it think the 1st sensor is bad or "stuck rich", no spacer = bad cat reading.
Maybe a shorter spacer is needed to find the sweet spot ? or a tune.
I found that if I ignore the CEL it goes away 
Last edited by JustCruisn; 04-09-2016 at 07:00 PM.
MK4 GTI - Sold
MK5 Jetta Turbo - Sold
MK5 Jetta 2.Slow - Until it dies.
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