Cat Back Exhaust

On Jan 27, 9:59 pm, "Bob La Londe" <nos....TakeThisOut@nospam.no> wrote:
> Is it worth it? Do you need to go to a higher flow air cleaner and a
> reprogram to take advantage of it? Any significant benefit to just the
> higher flow exhaust?

They sound better.

Otherwise, if a bigger tailpipe or a funky plastic airfoil in the
intake would really boost performance or efficiency, wouldn't the
manufacturer do it?
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"The Reverend Natural Light" <reverend.TakeThisOut@fourthgen.org> wrote in message
news:266e4b3c-9879-4422-b6f4-da7f7b580306@v46g2000hsv.googlegroups.com...
> On Jan 27, 9:59 pm, "Bob La Londe" <nos....TakeThisOut@nospam.no> wrote:
> > Is it worth it? Do you need to go to a higher flow air cleaner and a
> > reprogram to take advantage of it? Any significant benefit to just the
> > higher flow exhaust?
>
> They sound better.
>
> Otherwise, if a bigger tailpipe or a funky plastic airfoil in the
> intake would really boost performance or efficiency, wouldn't the
> manufacturer do it?

I don't know about a funky plastic airfoil... that sounds like it would
restrict airflow, but its pretty common practice to illegally modify engines
by reducing air restrictions at both ends and get a net HP increase when
paired with appropriate adjustments in fuel delivery. Motorcycles come to
mind. Remember emmissions applies to noise as well as spent waste gases.
The sad part with motorcycles is that often the gain can really only be
measured on the dyno. Some of the "chip" upgrades fall in the same
category.



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"Bob La Londe" <nospam RemoveThis @nospam.no> wrote in message
news:479d3a06$0$26077$88260bb3@free.teranews.com...
> Is it worth it? Do you need to go to a higher flow air cleaner and a
> reprogram to take advantage of it? Any significant benefit to just the
> higher flow exhaust?
>
>


all engines seem to prosper when they are able to breathe better--bigger
exhaust needs a better intake to balance--think a tuner helps--especially
when you want to go fast!
My GMC'06 2500 D-max has 4" exhaust with a banks air intake and a Predator
tuner--running in the economy/towing mod get 20.1mpg(measured) vs 19.6 when
the motor was stock--not really much difference but there sure is a better
seat of the pants feeling. Mileage does drop when running the 120hp tune
but sure makes folks pissed of when they get shut down by the big truck<LOL>
but the Allison may not like lots of rodding

Buzz
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"2fatbbq" <2fatbbq.RemoveThis@gmail.com> wrote in message
news:6078igF1pi6ehU1@mid.individual.net...
>
> "Bob La Londe" <nospam.RemoveThis@nospam.no> wrote in message
> news:479d3a06$0$26077$88260bb3@free.teranews.com...
>> Is it worth it? Do you need to go to a higher flow air cleaner and a
>> reprogram to take advantage of it? Any significant benefit to just the
>> higher flow exhaust?
>>
>>
>
>
> all engines seem to prosper when they are able to breathe better--bigger
> exhaust needs a better intake to balance--think a tuner helps--especially
> when you want to go fast!
> My GMC'06 2500 D-max has 4" exhaust with a banks air intake and a
> Predator tuner--running in the economy/towing mod get 20.1mpg(measured) vs
> 19.6 when the motor was stock--not really much difference but there sure
> is a better seat of the pants feeling. Mileage does drop when running the
> 120hp tune but sure makes folks pissed of when they get shut down by the
> big truck<LOL> but the Allison may not like lots of rodding
>
> Buzz

My current "big truck" is a 2500HD extended w/ 6.0L gas motor, and even
pulling my boat it has plenty of get up and go. I'm picking up a 1500 4X4
w/ 5.3 and I was exploring some options in case its not enough power. I
think it should handle the boat just fine, but I've got a utility trailer
that is heavier empty, and I haul equipment in it.






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