AS wrote:
> There are systems that actually control the flow of gases in the muffler
> to get the needed backpressure for some operating conditions. Not in
> the 2000 Maxima, that i know of.
>
>
> dgeesaman@[EMAIL PROTECTED]
wrote:
>
>> You do bring up a point I had thought about and disregarded.
>>
>> An overly restrictive muffler or some other clog could definitely
>> reduce power. But you will feel the loss in power, probably well
>> before you see a change in fuel economy. The OP described loss in
>> fuel economy only.
>>
>> As for too little restriction, these cars don't have issues (aside
>> from emissions legality and sound level) when running straight pipe
>> exhausts. I believe the too little restriction thing is largely a
>> myth, in fact.
>>
>> Dave
>>
>> On Jan 3, 1:51 am, AS <do...@[EMAIL PROTECTED]
> wrote:
>>
>>> A muffler with the wrong size (capacity) or wrong diameter pipe will
>>> affect more than fuel consumption, can even lead to engine
overheating,
>>> poor performance, etc.
>>>
>>> Remember that for some engine conditions require back pressure in the
>>> exhaust pipe and others require free flow.
>>>
>>>
>>>
>>> pgg wrote:
>>>
>>>> A couple months ago, my 2000 Maxima with 68,000 miles start making
>>>> terrible clunking noises from the muffler area.
>>>
>>>
>>>> My head wasn't on straight that day and I took it over to Meineke.
>>>> A pipe
>>>> was rusted out and hanging...they said even though the original
>>>> stainless
>>>> steel muffler was fine, they had to replace the muffler to replace
the
>>>> connecting pipe. I said "fine".
>>>
>>>
>>>> I know...dumb move in hindsight and I wish I would have taken it
>>>> elsewhere.
>>>
>>>
>>>> Well the Meineke muffler was $220 or something like that and
>>>> looks/works
>>>> fine.
>>>
>>>
>>>> However I swear I get 3-4 MPG less than I used to. Possible? I
>>>> also got
>>>> the MAF sensor replaced in the same time period...- Hide quoted text
-
>>>
>>>
>>> - Show quoted text -
>>
>>
>>
Yes, the 2000 thru 2002 Maxima have variable mufflers that "open up" at
higher RPMs.
My guess is it's the MAF change and the computer is still adjusting to it.
CD
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