Re: Maxima 2000: can new muffler cut MPG by 3-4??

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...
> 
>