Fellow GTI owners. I am thinking of the best performance upgrade for my Mk5 GTI, in the lines of a ECU flash upgrade ( I think thats what it is called). Are there any recommendations eg APR, REVO etc.
Has anyone done this and is it really worth the money?
Sorry if this thread has been posted before.
Has anyone done this and is it really worth the money?
Sorry if this thread has been posted before.
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