Custom torque tuning instead of top end HP?

jag1886 · Jun 6, 2017

I Have a Diablo tuner anyone know if there are any custom tunes for bottom end torque instead of top end HP?
I emailed HemiFever about this but only got back a generic answer so I can't tell if they have anything or not.
I looked up Jay Green but can only seem to find a Facebook sight, how do you contact him?

WadXpress · Jun 6, 2017

Message him on facebook

Hemi450hp · Jun 6, 2017

There is only so much that can be done in the tuning to make more hp or tq because Sean has already tuned it for your exact mods. The throttle sensitivity can be raised to bring the power on sooner with less throttle, but its very unlikely that Sean or any other tuner is going to be able to tweak what you already have to physically make more tq down low.

Txhemirt · Jun 6, 2017

Hemi450hp said:
There is only so much that can be done in the tuning to make more hp or tq because Sean has already tuned it for your exact mods. The throttle sensitivity can be raised to bring the power on sooner with less throttle, but its very unlikely that Sean or any other tuner is going to be able to tweak what you already have to physically make more tq down low.

Where is hemifever based out of

Hemi450hp · Jun 6, 2017

Txhemirt said:
Where is hemifever based out of

North Carolina

michaelrc51 · Jun 8, 2017

+1 for what Hemi450hp said. If you were running a turbo or SC the tune can affect different ranges but an NA motor isn't the same.

Sent from my iPhone using Tapatalk Pro

RAMTRPR · Jun 8, 2017

Exhaust sometimes can make a difference. I run short headers and like the TQ they give. Was going to go LT for overall power but didn't want to lose any TQ. With the 6"lift and 35's I need all the TQ I can get

. Maybe an ATI pulley will help as well.

Anything to get the exhaust flowing and rotational mass going quicker in low RPM's is what your looking for.

Sent from my iPhone using Tapatalk Pro

RLJ10X · Jun 8, 2017

Horse Power: Torque X RPM divided by 5252.

Toque is what you're after.

A Petal Commander does a very good job of artificially providing low end torque. I put a Pet Com in the V6 Mustang. The truck does real well as is.

michaelrc51 · Jun 8, 2017

BigRam1411 said:
Exhaust sometimes can make a difference. I run short headers and like the TQ they give. Was going to go LT for overall power but didn't want to lose any TQ. With the 6"lift and 35's I need all the TQ I can get . Maybe an ATI pulley will help as well.

Anything to get the exhaust flowing and rotational mass going quicker in low RPM's is what your looking for.

Sent from my iPhone using Tapatalk Pro

yeah but more flow isn't always the answer, especially with head work. Back pressure can help torque, all depends on the application.

Sent from my iPhone using Tapatalk Pro

RAMTRPR · Jun 8, 2017

michaelrc51 said:
yeah but more flow isn't always the answer, especially with head work. Back pressure can help torque, all depends on the application.

Sent from my iPhone using Tapatalk Pro

This is why when doing my exhaust I kept the 2.5" Y and just fixed the bottleneck and the Y junction (Magnaflow Y-pipe piece) and then did the stock 3" out the back.

If I did full 3" I would lose back pressure, thus losing TQ.

Sent from my iPhone using Tapatalk Pro

chrisp2493 · Jun 8, 2017

You guys need to do a quick google search and some reading before you start talking about "back pressure"...

shane1981 · Jun 8, 2017

chrisp2493 said:
You guys need to do a quick google search and some reading before you start talking about "back pressure"...

yes ^^^^^^^^

tuned by jay greene

RAMTRPR · Jun 8, 2017

Engine Masters E9:
https://m.youtube.com/watch?v=_PVXvHkr-Vs

When I went from 2.5" to 3" exhaust I felt like I lost TQ when in reality I just need a retune to take advantage of the difference in airflow.

Open up your exhaust as much as you can but make sure your truck is tuned for it or the butt dyno will lie to you

Sent from my iPhone using Tapatalk Pro

chrisp2493 · Jun 8, 2017

BigRam1411 said:
Engine Masters E9:
https://m.youtube.com/watch?v=_PVXvHkr-Vs

When I went from 2.5" to 3" exhaust I felt like I lost TQ when in reality I just need a retune to take advantage of the difference in airflow.

Open up your exhaust as much as you can but make sure your truck is tuned for it or the butt dyno will lie to you

Sent from my iPhone using Tapatalk Pro

I love engine masters, I watch every one of these

Just remember, that's a much bigger engine moving more air then say a 5.7. Also that's a wide open throttle

The key to this is backpressure isn't helping things. Velocity is what helps get rid of the exhaust, and a bigger pipe slows down the velocity of the flow. I know it's a technical term, let's just not drag this out over 8 pages of technicalities

michaelrc51 · Jun 8, 2017

chrisp2493 said:
You guys need to do a quick google search and some reading before you start talking about "back pressure"...

Maybe you shouldn't believe everything they say either. Or believe everything you read on the inter webs.

I've been around performance vehicles for 30 years and had a few myself. I have personally seen dyno charts of vehicles where it proves that the "back pressure" does make a difference as well as felt the difference.
The actual Tq number will stay the same, or increase, but that particular amount of Tq will be met at a higher RPM.
These principles are going to different from vehicle to vehicle and mod to mod. But, I have personally seen and felt this affect.
I also think that using a 650hp big block with huge headers/ collectors might be making the results much more minor. You can see there are differences in the curves varying by the exhaust or lack there of. This proves it affects the Tq and Hp. Lots of stuff affects the 2.....cams, heads, headers, carb/Fi, IM.......they all work in unison when you build a motor correctly, even down to the cam timing and exhaust pulses and all affect Tq and Hp.

shane1981 · Jun 8, 2017

some people just dont get it

tuned by jay greene

michaelrc51 · Jun 8, 2017

shane1981 said:
some people just dont get it

tuned by jay greene

Maybe you don't?
I've witnessed personal, factual data to prove otherwise.

Sent from my iPhone using Tapatalk Pro

shane1981 · Jun 8, 2017

oh i get it just fine but there isnt any use in arguing over it because like i said some people just dont get it no matter who says it. so you keep your backpressure and ill keep my my 18 mpg in the city and 25 on the hwy with full bolt on and hurting the 5.0 mustangs feelings around here with my highly reduced backpressure

tuned by jay greene

michaelrc51 · Jun 8, 2017

shane1981 said:
oh i get it just fine but there isnt any use in arguing over it because like i said some people just dont get it no matter who says it. so you keep your backpressure and ill keep my my 18 mpg in the city and 25 on the hwy with full bolt on and hurting the 5.0 mustangs feelings around here with my highly reduced backpressure

tuned by jay greene

I'll keep it only cause I have seen data that proves otherwise. That's right, actual dyno charts that prove such. I'll see if I can dig up some dyno charts.

I don't want to argue either but making stupid statements is no way to have debate about it.

Sent from my iPhone using Tapatalk Pro

shane1981 · Jun 8, 2017

and you believe what the dyno says? you cant believe everything you read. remember back a few posts?

tuned by jay greene

Custom torque tuning instead of top end HP?

Senior Member

Senior Member

Moe's Performance

Senior Member

Moe's Performance

Senior Member

"Enjoy The Little Things"

Senior Member

Senior Member

"Enjoy The Little Things"

Always Modding

Senior Member

"Enjoy The Little Things"

Always Modding

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Similar threads

Forum statistics

Share this page