For those w/ '99-'01s, CA emission, Y-pipe: Ever think of gutting your left pre-cat?
06-01-2006, 09:45 AM
#1
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For those w/ '99-'01s, CA emission, Y-pipe: Ever think of gutting your left pre-cat?
I don't usually post in the General Forum (usually 4th gen. or the SC forum) but since my question spans 2 generations, I'll try here.
As many/most of you know, if you have a '99 to '01 CA emissions Maxima, you can't eliminate your left bank pre-cat when you buy an aftermarket Y-pipe. All '95 to '98 and '99 to '01 Fed. aftermarket Y-pipes eliminate both the left and right bank pre-cats.
Fed:
CA '99-'01:
Well, it has been bothering me lately and I was thinking of gutting my left bank pre-cat on my '99 CA. Has anyone done this? Opinions? I'm guessing it has to be worth at least a few horsepower. I can't think of any major negative ramifications. All other Maximas eliminate their precat with a Y-pipe and it shouldn't affect the smog check since the pre-cats only play a role during warm-up. I actually took down the pre-cat segment last night which goes between the left bank headers and left Y-Pipe leg. The pre-cat is HUGE - about 4" dia. and the 1' segment weighs a ton! Anyway, the question is should I gut the left bank pre-cat? Thanks.
As many/most of you know, if you have a '99 to '01 CA emissions Maxima, you can't eliminate your left bank pre-cat when you buy an aftermarket Y-pipe. All '95 to '98 and '99 to '01 Fed. aftermarket Y-pipes eliminate both the left and right bank pre-cats.
Fed:
CA '99-'01:
Well, it has been bothering me lately and I was thinking of gutting my left bank pre-cat on my '99 CA. Has anyone done this? Opinions? I'm guessing it has to be worth at least a few horsepower. I can't think of any major negative ramifications. All other Maximas eliminate their precat with a Y-pipe and it shouldn't affect the smog check since the pre-cats only play a role during warm-up. I actually took down the pre-cat segment last night which goes between the left bank headers and left Y-Pipe leg. The pre-cat is HUGE - about 4" dia. and the 1' segment weighs a ton! Anyway, the question is should I gut the left bank pre-cat? Thanks.
06-01-2006, 10:01 AM
#3
Its been done and apparently didn't yield any significant gains:
http://forums.maxima.org/showpost.ph...6&postcount=10
http://forums.maxima.org/showpost.ph...6&postcount=10
06-02-2006, 08:53 AM
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:o)
Originally Posted by Puppetmaster
Its been done and apparently didn't yield any significant gains:
http://forums.maxima.org/showpost.ph...6&postcount=10
http://forums.maxima.org/showpost.ph...6&postcount=10
Awesome. Thanks man.
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