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Discussion Starter #1
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
 

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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.
 

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Discussion Starter #3
if i fingerstick it, those codes should go away right?
 

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Discussion Starter #5
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.
 

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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
 
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