Mapping after the mechanical changes, type mark-up turbo.

[Emanuele54]

Hello all,

I wanted to ask you how you have to behave in front of a mapping after the increase of the turbo......

I need the particular data to intervene?
In that terms I have to modifivare the curves of the turbo?

Someone gives me some tips?

Thanks

[munro]

hello emanuele....
as well, you know, a turbo, plus it brings more air into the combustion chamber is also equal to the operating pressure, therefore, there is substantially more air your afr will go up and you will be probably a more skinny...then the first thing to do is to carefully monitor via a log or a wideband for your afr and, consequently, to adapt it to the new engine requirements...
another key aspect to monitor when you mount a turbo bigger is the ignition advance...
also here you have to monitor via the log signals from the temperature sensor the intake air in the manifold and those of the knock sensor to see if your engine is a bang or not....and in the case reduce to some degree the advance...even if some of the ecu they are already, if it can be that your knock is a little high and the ecu is not able to return within the limits of safety...
this, fundamentally, so then you have to see case by case... that the car/ecu is it??

[Emanuele54]

Audi TT mk1 225cv should fit a bosch me7...... If I'm not mistaken.....

The other indications?

Thanks

[Emanuele54]

no one has any other info to advise and warnings to be aware of?

Thanks

[munro]

you have to monitor the load required load actual engine, the maf, and especially the ltft and stft..
ltft=long term fuel trim=adjustment fuel in the long term should be a maximum of around +/-5%
stft=short term fuel trim=adjustment fuel in the short term should be a maximum of +/-1%