alright so i got the car like 3 days ago and i go start it up and let it warm up and then my car start to get a bump bump feeling like upgraded cams then when i drive i get no pull at all i think it is the timing belt or probly misfireing any tips on how to find out and fix it would be greatly apreceated

probably the coil packs

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-2005 A4 USP Ocean Blue Pearl FWD 1.8T 5-Speed (1 of 9): Falken FK452/K&N 33-2209 Drop-In Filter/NGK BKR6E Plugs/APR Stage 1 (Fall)/Forge 007 (Fall)/Spacers (Spring)-

-2005 Audi A6 Allroad 2.7T Auto: 20mm Spacers

Yeah, check your coilpacks/plugs.

order some hitachi E coilpacks... for some reason our OEM coilpacks seem to go randomly... R is the latest revision of them, less likely to blow but still can go....

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APR 1+ Stasis StreetSports/Center Diff Neuspeed Exhaust/TP Podi w/ VEI Digital Gauge JHM Short Shifter Southbend FE SS Racetec FMIC Apikol Snub 6000k HIDs

2004 AUDI A4 1.8T UltraSport

Thanks everyone

Brought in the car and it ended up eiong the ignition coil got it replaced and drove itm the same day in the snow AWD kicks ass