bhodgkiss
Veteran Member
Hi all,
Finally installed a BV43 turbo on my Passat TDI 110bhp.
Deleted the EGR, fitted a front mount intercooler, put a professionally ported head on too.
Here is the boost log with the new turbo:
It feels a tiny bit laggy low down, but pulls just as well as before at the top end.
Which is reflected in the charts really.
Duty cycle only hits 55% and actual boost lags requested throughout. Before, I had 77% duty cycle at 4000rpm and actual boost followed requested well (OEM map)
So should i shorten the vacuum actuator on the turbo to make it more responsive? There are no boost spikes at the moment.
Its a warm day here, so outside pressure is 867mbar and 22Celcius.
Otherwise, can a boost leak give the same signs?
Thanks
Finally installed a BV43 turbo on my Passat TDI 110bhp.
Deleted the EGR, fitted a front mount intercooler, put a professionally ported head on too.
Here is the boost log with the new turbo:
It feels a tiny bit laggy low down, but pulls just as well as before at the top end.
Which is reflected in the charts really.
Duty cycle only hits 55% and actual boost lags requested throughout. Before, I had 77% duty cycle at 4000rpm and actual boost followed requested well (OEM map)
So should i shorten the vacuum actuator on the turbo to make it more responsive? There are no boost spikes at the moment.
Its a warm day here, so outside pressure is 867mbar and 22Celcius.
Otherwise, can a boost leak give the same signs?
Thanks
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