Any interest here in better mpg mods?
Thread Starter
|
Hall Of Fame
Joined: Jan 2004
Posts: 12,946
Likes: 309
test drive done all looks good. forgot to pull battery cable.
first impression with tb is oh snap! wow! worth the $135 bux for it will see how it does after a tank or two.
first impression with tb is oh snap! wow! worth the $135 bux for it will see how it does after a tank or two.
Last edited by steve05ram360; Dec 25, 2021 at 03:08 PM.
Thread Starter
|
Hall Of Fame
Joined: Jan 2004
Posts: 12,946
Likes: 309
yeah i was surprised... but i dont expect that to hold.... just go back from visit... 98 miles. seems to have more power on the steeper hills. cant do a before & after test, all i can do is roll off 200ish miles, fill it up and compare against the other tanks of 16.3-16.5 mpgs...
Professional
Joined: Oct 2018
Posts: 194
Likes: 52
OKay, we'll wait and see if the mpg's are coming up, i've read there's a 0.5mpg increase on the TB change.
You said on steeper hills it has more power, all the things i know are when changing the air intake, throttle body and exhaust you've get better flow, in and out and it helps to breath, wich will result in a HP increase in the top end, at higher RPM's and it will pull through in the higer RPM's because of the flow.
But like you i'm more interested in the low end power, so more torque at low RPM's, i rarely come above 3000 rpm's.
So like all changes have effect on everything, like chip tuning, most of the times people want more HP's and there for the tunes will be set, wich will result in more HP's and also related to that they will have more Torque, because it's related.
Thing is, you can have different tuning styles, or you aim for Horsepower and gain a little Torque, or you go for Torque and gain a little HP's along the way.
I've read there are people who changed the TB and got higher RPM's and a stronger top end, better response on throttle, but they have a higher idle between 900/1100 rpm's and less torque.....
If changing the TB results in less torque i'm not going this route, but i've also read when changing the TB you have to tune it for it and you will gain torque in the low end.
So i know you're looking for torque as well, specially with the Jeep TCM, i'll be patient again and see what the HPTuners will do together with the 70mm TB.
Good luck Steve and thanks for the updates and guidance.
You said on steeper hills it has more power, all the things i know are when changing the air intake, throttle body and exhaust you've get better flow, in and out and it helps to breath, wich will result in a HP increase in the top end, at higher RPM's and it will pull through in the higer RPM's because of the flow.
But like you i'm more interested in the low end power, so more torque at low RPM's, i rarely come above 3000 rpm's.
So like all changes have effect on everything, like chip tuning, most of the times people want more HP's and there for the tunes will be set, wich will result in more HP's and also related to that they will have more Torque, because it's related.
Thing is, you can have different tuning styles, or you aim for Horsepower and gain a little Torque, or you go for Torque and gain a little HP's along the way.
I've read there are people who changed the TB and got higher RPM's and a stronger top end, better response on throttle, but they have a higher idle between 900/1100 rpm's and less torque.....
If changing the TB results in less torque i'm not going this route, but i've also read when changing the TB you have to tune it for it and you will gain torque in the low end.
So i know you're looking for torque as well, specially with the Jeep TCM, i'll be patient again and see what the HPTuners will do together with the 70mm TB.
Good luck Steve and thanks for the updates and guidance.
Thread Starter
|
Hall Of Fame
Joined: Jan 2004
Posts: 12,946
Likes: 309
OKay, we'll wait and see if the mpg's are coming up, i've read there's a 0.5mpg increase on the TB change.
You said on steeper hills it has more power, all the things i know are when changing the air intake, throttle body and exhaust you've get better flow, in and out and it helps to breath, wich will result in a HP increase in the top end, at higher RPM's and it will pull through in the higer RPM's because of the flow.
But like you i'm more interested in the low end power, so more torque at low RPM's, i rarely come above 3000 rpm's.
So like all changes have effect on everything, like chip tuning, most of the times people want more HP's and there for the tunes will be set, wich will result in more HP's and also related to that they will have more Torque, because it's related.
Thing is, you can have different tuning styles, or you aim for Horsepower and gain a little Torque, or you go for Torque and gain a little HP's along the way.
I've read there are people who changed the TB and got higher RPM's and a stronger top end, better response on throttle, but they have a higher idle between 900/1100 rpm's and less torque.....
If changing the TB results in less torque i'm not going this route, but i've also read when changing the TB you have to tune it for it and you will gain torque in the low end.
So i know you're looking for torque as well, specially with the Jeep TCM, i'll be patient again and see what the HPTuners will do together with the 70mm TB.
Good luck Steve and thanks for the updates and guidance.
You said on steeper hills it has more power, all the things i know are when changing the air intake, throttle body and exhaust you've get better flow, in and out and it helps to breath, wich will result in a HP increase in the top end, at higher RPM's and it will pull through in the higer RPM's because of the flow.
But like you i'm more interested in the low end power, so more torque at low RPM's, i rarely come above 3000 rpm's.
So like all changes have effect on everything, like chip tuning, most of the times people want more HP's and there for the tunes will be set, wich will result in more HP's and also related to that they will have more Torque, because it's related.
Thing is, you can have different tuning styles, or you aim for Horsepower and gain a little Torque, or you go for Torque and gain a little HP's along the way.
I've read there are people who changed the TB and got higher RPM's and a stronger top end, better response on throttle, but they have a higher idle between 900/1100 rpm's and less torque.....
If changing the TB results in less torque i'm not going this route, but i've also read when changing the TB you have to tune it for it and you will gain torque in the low end.
So i know you're looking for torque as well, specially with the Jeep TCM, i'll be patient again and see what the HPTuners will do together with the 70mm TB.
Good luck Steve and thanks for the updates and guidance.
you are correct in what you mention on the cai, it will shift power up the rpm range. i aim to get both with the air box mod... that part throttle torque from 1200ish-3000ish is key. i also have an idea on an alternate intake tube setup that extends and expands the straight segment at the throttle body. if i i g ( <- tired this fixing this crap, sorry... I type i and it auto-corrects to this every time) get the right coupler it will sort of duplicate my thought but it will have an abrupt change in flow at the TB. that abrupt change causes turbulence at the throttle body entry. i think it needs to be cone shaped far enough out so that there can be a long enough section of intake pile to allow the flow to become laminar again. the cone shape will also increase velocity into that straight segment. not sure yet if i i will jump on that, will try the airaid tube and see what i i g.
i am sure the air box mod is going to give some good results, its everything after that which needs testing.
Thread Starter
|
Hall Of Fame
Joined: Jan 2004
Posts: 12,946
Likes: 309
on the exhaust, the y-pipe definitely needs to be swapped, manufacturing process added a bunch of kinks that choke flow. i want to get it set up so it is 2.25" to the ds/ps bank collector and then is 2.5 after. but that is way down the road. years back with my last ram i ient down the recommended road with the bigger exhaust and lost the part throttle bottom end torque and mpgs... in front if the 3" inlet of the muffler i iut a 2.5" reducer which brought all that lost torque back as well as the mpgs. the shorty headers did not seem to impact mpgs but did bring the exhaust flow off the head and evened out the exhaust temps. this switch from the oem manifold came from a clogged cat at the passenger side head which lead to a burnt exhaust valve seat.
Thread Starter
|
Hall Of Fame
Joined: Jan 2004
Posts: 12,946
Likes: 309
Professional
Joined: Oct 2018
Posts: 194
Likes: 52
I've read the whole thread a while back, and therefor i think we are not gaining the things we want out of the 4.7L
Every mod is bringing more HP's in the top end.
The only things wich will work for Torque in the low to mid range are the Kenne Bell Supercharger, the cat or cat delete and is a PCM Tune by Leach, all others are shooting for higher rpm's and HP's.
Forgot to mention the HO Camshafts, they seem to work very well.
So in the States they may be doable, but over here, the only option is to get a PCM Tune, all others will fail yearly inspection and will result in taken away the pink slip...
Every mod is bringing more HP's in the top end.
The only things wich will work for Torque in the low to mid range are the Kenne Bell Supercharger, the cat or cat delete and is a PCM Tune by Leach, all others are shooting for higher rpm's and HP's.
Forgot to mention the HO Camshafts, they seem to work very well.
So in the States they may be doable, but over here, the only option is to get a PCM Tune, all others will fail yearly inspection and will result in taken away the pink slip...
Last edited by V8Cowboy; Dec 26, 2021 at 03:42 PM.
Thread Starter
|
Hall Of Fame
Joined: Jan 2004
Posts: 12,946
Likes: 309
What about the 03+ intake manifold? Been reading about it and 1 guy indicated an mpg bump with it over the older longer runner version. I dont recall any specifics on his setup. The '03+ ones should be easy to find. Not sure I'm motivated yet to test it out, I think it would hurt me with the 3.55's + taller tires and trying to run down the freeway at 1500~1700 rpms...