Check engine light..

[sho2010pp]

I had a local shop install my set of cat less downpipes and now I have a CEL and codes P0030 P0130 P0420 and P0430. Does anyone know what these specific DTCs are?

 

[SHOdded]

Assuming they didn't damage any of the sensors, you need to call LME and have the tune updated to turn the rear O2s off.

This site doesn't have all the codes, but most of the common ones:
http://www.obd-codes.com/

 

[sho2010pp]

Thanks I emailed LME and they sent me a updated tune yesterday but I still have these codes My installer probably damaged the sensors..

 

[SHOdded]

Have the shop re-check the gaskets, make sure there's no leaks. Did they use new OEM gaskets, or re-use the old ones. Sometimes you have to double-gasket to get a proper seal.

 

[sho2010pp]

They put new OEM gaskets that I had bought on. I'll definitely have them do that. Do you think I could use the old gaskets to double up with the new ones?

 

[SHOdded]

As long as they are intact, sure. At worst, it will at least confirm whether doublegasketing is a fix or not.