Quote:
Originally Posted by SilverSurfer
ecutek it for now and don't bother with the boost controller as OE boot control is good with anecutek map.
On the standard TD04 turbo you can only run 1.2bar midrange 1bar at the top end.You need a much more serious turbo, injectors, gearbox and bottomend to run 1.6bar.
Re "Need to get rid of my part throttle issue that its pulsing ( can see on my aem lambda kit that its pulsing betreen 13 to 16.1 on the air/fuel ratio) upto 0.2 bar of boost the richens to 10.5 afr "
That sounds normal the 13 to 16.1 is the ECU stoich control for emission balancing the AFR around 14.7. When you go above 0.2bar the ECU switches from Lambda control for fuelling (which will oscilate to achieve the most efficient burn) to MAF Control which richens as boost/revs increase.
A new lambda may smooth it out, but a trick with the classic scoob, if it annoys you, is to unplug the Lambda. This will run smoother but slightly richer at idle/cruise. It won't flash the check engine light unless you do an ECU test. Just plug it back in for MOT.
If it only happens when cold then don't worry too much as the lambda feedback is poor when the probe is cold hence the hesitation. This should improve when warm. It could be that the heater element within the lambda probe has failed.
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buy a syvecs and then there is no need for the lamba sensor or the crap maf sensor save your money and do it once