I got the delete pipe pretty much, and i have replaced plugs but keep getting these same 2 codes

VCDS-Lite Version: Release 1.1
Sunday, 13 January 2013, 00:01:30:8702
Control Module Part Number: 8D0 907 557 P
Component and/or Version: 1.8L R4/5VT MOTR HS D06
Software Coding: 06201
Work Shop Code: WSC 06335
VCID: 3D0D9B09247F
2 Faults Found:
16806 - Main Catalyst; Bank 1: Efficiency Below Threshold
P0422 - 35-00 - -
17544 - Fuel Trim: Bank 1 (Add): System too Lean
P1136 - 35-00 - -

Also every once in a while i get multiple misfire code.

 

P0422 Catalyst Efficiency Below Threshold is from your cat delete pipe. The secondary O2 sensor thinks your cat is borked since you took it out. You'll need to space out the secondary O2 sensor or put the catalyst back in. Spacers are pretty cheap, I'm using this one on my current test pipe:

RAI J-Pipe and spacer for CEL prevention

And I used this one on my old ATP test pipe:

O2 Spacer Adapter Oxygen Sensor Extender 02 Bung Extension M18 x 1 5 Adaptor HHO | eBay

And they both work very well. I'd be willing to bet the second code is related to the first one. How are your plugs?

 

could do that or take it out and tie it off somewhere... i did this on my civic and put in under the center consol(wiring on civic had o2 sensor wire run under the dash through the floor). you have to make sure it doesnt touch anything because it gets hot.

can also go to pepboys or something and get 2 18mm sparkplug defloulers and drill one all the way through then screw the drilled one into the other one. then screw o2 sensor into that.

 

I made sure ro buy the factory ones. The bosh oem. I thought it could be coil pack but auto zone said. Probably the ignition control