i took it to a shop and they told me they couldnt look at it because they didnt have a proper scanner. so my Girlfriends dad took it to a friends house. he scanned it i guess, told me the exhuast on my front 2 cylinders on driver side didnt warm up like the rest of the 4. he doesnt know why. and i guess no codes came up either. i just had the cap and rotor replaced. and spark plugs. i still need to get new exhaust. it also surges really bad when it idles or go to drive it. any ideas why the cylinders arent firing if thats the issue?