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Discussion Starter · #1 ·
good friend with a gti 2.0t keeps getting these reoccuring codes...

p0303 post catalyst fuel trim to high(rich)

p2096 misfire cylinder 3

his mods are,
catless downpipe(ebay)
ngp cold air intake kit
unitronic stage 2 software
version c dv
new cam follower

these codes keep coming up, we clear them and they stay away for a few weeks(sometimes days) and then come back.
-not coil packs, and plugs have been replaced already(misfire keeps coming back)
-the software should block any 02 sensor codes...

any help would be great!!!
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