Quote:
Originally Posted by Jamiewelch
MAP sensor takes into account atmospheric pressure which I believe is around 14-14.5psi.
Which would give you around 8psi which sounds a bit low to me? To be honest, I'm not sure what boost a 1.8T should be running at.
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I observed a MAP reading of 14.6 at full throttle (before I refitted the actuator arm and the car was essentially running as a Nasp 1.8) which is atmospheric pressure. Under partial throttle or at idle it was running as low as 4.5.
Now it's fixed, I've observed a MAP of 22.8 under full load, equating to about 8 PSI boost which I understand is about right for a stock 1.8T.
The difference between having boost and not is remarkable. While it doesn't make much difference pootling around town, at higher speeds the car was unnervingly slow. I really couldn't like with a nasp 1.8 auto.
I'm delighted that the solution was so easy and cost £0, and experiencing the car in the slower form has proved interesting.