[DuramaxSilvy]

I have a '05 LLY, AFE mouthpiece is my only mod so far.

im looking to get a 5" MBRP turbo back no cat exhaust, will this throw codes that will put it in limp mode? i have a cali emission truck. not an FE9

 

[beaviscs247]

I have an 05 LLY with cali emissions. I did the MBRP down pipe and 5" back no muffler. I threw 3 codes. P0405, P0299, P0401. The truck goes into limp mode.

 

[DuramaxSilvy]

if i fingerstick it, those codes should go away right?

 

[Duraskank]

FS blocks p0401 and the like.

 

[DuramaxSilvy]

so what do i need to do in order to put on a 5" exhaust with no cat on a stock programmed truck without going in limp mode?
doing a cat back would defeat the purpose of putting a larger exhaust on it due to turbo down pipe size.

 

[DontTreadOnMeLLY]

I have a cali truck and did a 5 straightpipe exhaust but no aftermarket dp and i dont go into limp idk if i have any codes because my cel has been on since my egr plate was installed