Would it be advantageous to get a fed spec maxima instead of a cali spec maxima? I hear that the 2001 models are all cali spec while there are some 2000 models that are cali spec while most are fed spec. Is there a difference in performance between the two? Would one be easier to mod than the other or more responsive to mods than the other? thx

 

The extra pre-cat in a Cali spec car might be an extra thing to fail and throw a code, but it hasn't really proven to be a hindrance to performance or "modding". I guess if you get headers, a Cali spec car has one more secondary O2 sensor to worry about it, but that's it really.

Desert Pearl converted his 2000 Cali to Fed spec by basically replacing the front pre-cat with a Fed manifold and didn't see much difference on a dyno. More info on this can be found in the FAQs or How Tos.

 

would an 01 be fed or cali

 

That not true i have an o1 max and its fed spec, they not all cali

 

Take a picture of your engine bay, I want to see a 01 fed spec maxima

 

That's not true, you have an o1 max and its cali spec, they are all cali

 

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How would you tell if their a cali spec of a fed spec? looks like i get 4 o2 sensor connections in the front near the fan.

 

4 o2 sensors in the front = cali spec
anything else = fed spec

 

I put a fed spec y-pipe on my car, could that be why i getting a weird noise up front like a psshhh at higher speeds. http://forums.maxima.org/showthread.php?t=463455

 

could be why u getting that noise i belive the fed spec y-pipe is a lil smaller than cali spec dont quote me on that tho

 

Yeah i wanna see this too post a pic

 

First off plz post pics of what this looks like.
Second in order to install that fed spec on a cali spec you would have to remove the pre cat and have the fed spec oem headers. Did you do that???
Third did you use a oem crush gasket that goes in to the seal between the ypipe and header.
Fourth who did you buy this y-pipe front???
Fifth and once AGAIN PLZ POST SOME PICS of this.