Im at a loss...

[SilverStr33k]

ok, so i got my emmissions notice, however i have an issue, my stg3 has had a cel for random multiple cylinder misfire for 2.5 years now however the miss is only below 2.5k rpm, also now im gettin the flashing cel for misfire, and to top it off, i removed my hks evc and im back on the n75 valve, my boost guage in 3rd gear goes 26, 17, 22, 14, and creeps back to 20 by redline...im guessing the boost issue is from the n75, however this misfire is killing me, the car has all new coil packs and plugs multiple times....also i dont have a vagcom, only a code scanner...

[SilverStr33k]

i just scanned and im getting p0442-evap control leak, p0300-random multiple cylinder misfire, p1176-o2 correction behind catalyst, p1177-o2 correction behind catalyst

[Evilevo]

Check your rear 02s and check for a boost leak

[SilverStr33k]

will do, thanks, also is there a really common ignition problem with these cars or?