check engine light need help

[05gt]

hey guys i just put on the eleanore kit on my 05 with the side exhaust...and now my chrck engine light came on and it also drives really weird and the engine light starts to blink rapidly if i go over 75mph.... i scaned and it and it me these codes p0174, p0300, p0302, p0306, p0308....could it just be from the exhuast needing to be tuned....and are there any good shops in the area u would recommend...i was thinking pandj but heard mixed review about them...thanx

 

[_bones]

did u change the mid pipe with high flow cats or a offroad pipe? i had the some problem after i did so. now i gotta put mill eliminators on. basically in my case the rear 02 sensers are reading to much exhaust goin by and it throws a code.

 

[05gt]

its just bolted on from the midpipe... basically they are just mufflers...

 

[06mach1]

P0174 is bank 2 lean, the rest of the codes are for misfire in that bank. It appears that something must have change on bank 2 when the exhaust was installed. Are the O2 sensors functioning properly on that side? If the MIL light is flashing, that means that you should not drive the vehicle as you are damaging the CAT.

 

[05gt]

i am taking the car to keneddystuning to get it fixed and the light flashed about 3 different times for about 30secs...would u say that might be enough to mess the cats where i would need new ones???sorry for the dumb questions