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do i have 2 cats

i got a 99 and under my hood it says it meets cali and federal standards so is it safe to assume i have the model with 2 cats?
 

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Yes it is safe to say. You have two cats. I only have one and the resonator. I was wondering though. Say i take out my resonator will that do anything to emissions?? Will it be louder than stock?? If i take it out and put a free flow cat, will i gain anything??
 

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Niss200SXGTR said:
all stock sentra/200sx has a cat on the manifold, but dont 95-97's all come with 2 cats??!?
Were you not reading the whole thread??? Im sorry but how can you post such an ignorant post. I am sorry mods and admins, but he should have read the previous posts.

GundamONE: check out www.sentra.net under the headers section. Quite an improvement in low, mid and high end power.
 
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