I have a 03 new beetle auto 1.8T just had timing belt service done

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I have a 03 new beetle auto 1.8T just had timing belt service done. went to start and started right up but rough idle and noticed a little smoke come out of pipe when first started. I asked the mechanic if the timing was set perfect and he showed me pictures showing it was, not it is hard to start , rough idle, check engine light is on, EPC light on and another one with circle yellow, codes P0237, P1592,P1337,P1633,P0102 show up. don't know if coincidence. it did act up about a month ago would not start and found was fuel pump relay so replaced it with OEM and fuel pump and filter. also a few days ago it didn't want to start right away took a couple of tries