All Things Mk5 > How to Guides / Troubleshooting

FUEL TRIMS

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Scoobykiller:
So today i found out about fuel trims.
So decided to check mine
The results are -1.9 +17.2
What does this mean is it bad?
Thanks

Dan_FR:
Far from ideal really. Substantial under reading from the MAF sensor caused by the intake. What map? Standard?

Scoobykiller:
My dv leaks boost under load
Im stage 2+

The intake i got is an mtc intake and i just fitted it recently
Previosue i had some other one but piping wasnt thick enough(70mm) this is 90mm

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