I just installed the emcs chip on my 01 jetta 1.8t. The performance is signaficantly better but i have one major problem. The car seems to "burble" or slip, when i get on the gas. It is not a sound just a soft hesition in the power band and it feels really unsmooth. Im thinking its an airflow problem but am unsure. Could anybody please enlighten me on why it is doing this..? TIA