Looks like I have to adjust the actuator.. - Alfa Romeo Forum
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Old 28-05-12
tb205gti's Avatar
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Join Date: May 2012
Location: Denmark
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Peugeot

Looks like I have to adjust the actuator..

Since I fitted some Alfa DSLA144P1295+'s to my car I have been suffering from far slower turbo spool, so today I decided to make some quick logs.

..and by the looks of it I need to adjust the actuator - or find out why it makes so late boost with the bigger injectors.

First, a log of the injected amount:

http://2200kbhn.dk/logs/log_iq.JPG

The Turbo pressure + MAF reading

http://2200kbhn.dk/logs/log_MAF_boost.JPG

and finally the VNT % and inlet temps measured in the MAF:

http://2200kbhn.dk/logs/log_IAT_vnt.JPG

..and the whole data:

http://2200kbhn.dk/logs/log_all.JPG

I wonder why the turbo makes so late boost with the bigger injectors, I have retarded the injection quite a bit on it by now - but it does not make a huge difference. Before I sued ot have 2.5bar (absolute) at 2.000, now I have 1.8

Looks like I have to take a look at the actuator, I don't think it can pull the vnt fully.

What do you think? As for power, do you have any "guestimates" on this?
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