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: Replace Cat with downpipe from lb7 bcarricarte 10-11-2006, 11:48 PM Ok I've got a guy whos practically giving me a downpipe of an lb7 that had about 50k miles. Should I buy it from him and put it on my 05. Tell me what you guys think. What are my pros and cons. I know a lot of people buy the 4inch downpipe, but I really dont feel like spending that much. I can get an lb7 pipe for very cheap. Please let me know I gotta give this guy an answer soon. Thanks JoshH 10-12-2006, 12:01 AM The LB7 pipe is a little more restrictive than a 4" aftermarket unit, but if the price is right, I say go for it. D Lafleur 10-12-2006, 11:06 AM It will work, EGT is going to decrease about 150*. beermccoy 10-12-2006, 11:44 AM I bought a LB7 downpipe for mine... It'll work for ya.. bcarricarte 10-12-2006, 12:05 PM Do you guys think I'll get a cel with the lb7 pipe BigWill_21 10-12-2006, 01:09 PM Probable not unless its a California truck!!!! I have a 04 LB7 pipe on my 04.5 LLY... Been there for 2 years now.. NO PROBLEMS!!! beermccoy 10-12-2006, 04:41 PM Probable not unless its a California truck!!!! I have a 04 LB7 pipe on my 04.5 LLY... Been there for 2 years now.. NO PROBLEMS!!! X2 | ||