Exhaust Mods vs. MPG's?
#1
Exhaust Mods vs. MPG's?
What kind of Hemi exhaust mods affect mileage? Just changing out the muffler, or exhaust tip, or full systems?
I had wanted to dual out my exhaust. I was thinking of leaving the stock muffler in place and removing the resonator. Then install a Y-pipe at the end of the muffler and install some chrome echo tips, 3" dia. and 24" long. This would provide the "look" and add some rumble without being loud or causing drone? It worked on a previous GM 6.0L great.
Any thoughts?
I had wanted to dual out my exhaust. I was thinking of leaving the stock muffler in place and removing the resonator. Then install a Y-pipe at the end of the muffler and install some chrome echo tips, 3" dia. and 24" long. This would provide the "look" and add some rumble without being loud or causing drone? It worked on a previous GM 6.0L great.
Any thoughts?
#3
there will be a slight MPG gain if
the exhaust mods lower the already low
backpressure that exists during 'daily driving'
but removing the resonator won't change the backpressure
enough to be a measureable change
there is a slight MPG improving effect
if the exhaust outlet goes straight back
(notice most cars do this.... think of it as a tiny jet engine exhaust)
but on a truck that may sometimes tow a trailer
the exhaust is angled out the side
to prevent the possibility that
carbon monoxide gas would build up in the trailer
notice how 18 wheel trucks
run the exhausts upward (like a smoke stack)
and then angle the exhaust backwards?
... that combination of 'natural draft' and 'scavenging'
results in a slightly lower backpressure
while still keeping carbon monoxide gas away from
potential build up in a trailer
the exhaust mods lower the already low
backpressure that exists during 'daily driving'
but removing the resonator won't change the backpressure
enough to be a measureable change
there is a slight MPG improving effect
if the exhaust outlet goes straight back
(notice most cars do this.... think of it as a tiny jet engine exhaust)
but on a truck that may sometimes tow a trailer
the exhaust is angled out the side
to prevent the possibility that
carbon monoxide gas would build up in the trailer
notice how 18 wheel trucks
run the exhausts upward (like a smoke stack)
and then angle the exhaust backwards?
... that combination of 'natural draft' and 'scavenging'
results in a slightly lower backpressure
while still keeping carbon monoxide gas away from
potential build up in a trailer
#4
#7
That's pretty much what I wanted. Went with this kit from Summit:
http://store.summitracing.com/partde...5&autoview=sku
The muffler is an Imco T-914 turbo series. To me is about what a stock system should sound like. At idle, it is just a little louder than stock. When you gas it , it has a nice tone that is not crazy. At cruise you can hear it, but has no drone. Used band clamps to install the kit(the kit comes with regular clamps) , in case I didn't like the way the muffler sounded, I could change it.
http://store.summitracing.com/partde...5&autoview=sku
The muffler is an Imco T-914 turbo series. To me is about what a stock system should sound like. At idle, it is just a little louder than stock. When you gas it , it has a nice tone that is not crazy. At cruise you can hear it, but has no drone. Used band clamps to install the kit(the kit comes with regular clamps) , in case I didn't like the way the muffler sounded, I could change it.
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#9
That's pretty much what I wanted. Went with this kit from Summit:
http://store.summitracing.com/partde...5&autoview=sku
The muffler is an Imco T-914 turbo series. To me is about what a stock system should sound like. At idle, it is just a little louder than stock. When you gas it , it has a nice tone that is not crazy. At cruise you can hear it, but has no drone. Used band clamps to install the kit(the kit comes with regular clamps) , in case I didn't like the way the muffler sounded, I could change it.
http://store.summitracing.com/partde...5&autoview=sku
The muffler is an Imco T-914 turbo series. To me is about what a stock system should sound like. At idle, it is just a little louder than stock. When you gas it , it has a nice tone that is not crazy. At cruise you can hear it, but has no drone. Used band clamps to install the kit(the kit comes with regular clamps) , in case I didn't like the way the muffler sounded, I could change it.
Thanks
#10