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 -
>
>
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