DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Mod Zone - Custom Dodge Ram Mods - Dodge Ram Performance > Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8
Register Advertising Gallery FAQ Members List Calendar Search Today's Posts Mark Forums Read


Notices

Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


Latest Vendor News
AutoAnything
Addictive Desert Designs!
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 01-20-2015, 09:06 PM
HammerHead's Avatar
HammerHead HammerHead is offline
USMC 0313

 
Join Date: Apr 2014
Location: GEORGIA
Posts: 943
Gender: Male
Vehicle: 2013 RCSB
Trim Level: Express
Color: SILVER
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 0
Rep:20
HammerHead is on a distinguished road
Default Swapped muffler with Y pipe and lost .2 on my 0-60??

Yep guys I sure did; tested it with my T1000 tonight and my average loss was .2 seconds on my 0-60. I assumed opening up the exhaust would give me a little improvement, sound is perfect and exactly what I was looking for but the .2 loss is a real bummer. The question is why? Back pressure or exhaust velocity is the only two things I could think of that would be affecting my times. One thing I did notice and you can see in the pic attached is they cut the Y pipe dead center of the 3'' main pipe instead of farther back to the back of the exhaust system were the muffler was located. Take a look at the pic and shoot me some ideas. Everything I've done to my truck as been reduced my times until now; need some advice. My first idea was to move the Y pipe back farther were the muffler was located possibly increasing exhaust velocity.
Attached Images
File Type: jpg image.jpg (122.9 KB, 84 views)
__________________
Geared and Tuned (Greene Racing Motivation) 14.0@96
Proud member of the 4 second club...
Reply With Quote
Sponsored links
  #2  
Old 01-20-2015, 10:47 PM
roo roo is offline
Dodge Ram Forum Senior Member
 
Join Date: Dec 2011
Location: texas
Age: 55
Posts: 547
Gender: Male
Vehicle: 2013Express,2014 Charger R/T
Trim Level: Express
Color: White
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:44
roo is on a distinguished road
Default

Are you getting more wheel spin, does it feel much different from a roll?
Reply With Quote
  #3  
Old 01-21-2015, 08:05 AM
HammerHead's Avatar
HammerHead HammerHead is offline
USMC 0313

 
Join Date: Apr 2014
Location: GEORGIA
Posts: 943
Gender: Male
Vehicle: 2013 RCSB
Trim Level: Express
Color: SILVER
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 0
Rep:20
HammerHead is on a distinguished road
Default

Quote:
Originally Posted by roo View Post
Are you getting more wheel spin, does it feel much different from a roll?
I have less tire spin now and it feels like a dog from a roll; it just flat out does not hit as hard. Bummed
__________________
Geared and Tuned (Greene Racing Motivation) 14.0@96
Proud member of the 4 second club...
Reply With Quote
  #4  
Old 01-21-2015, 08:19 AM
Alberto22's Avatar
Alberto22 Alberto22 is offline
Dodge Ram Forum Senior Member
 
Join Date: Apr 2011
Location: long Island, New York
Age: 43
Posts: 319
Gender: Male
Vehicle: 2011 ram 1500 quad cab
Trim Level: Big Horn
Color: Deep water blue Pearl
Rep Power: 0
Rep:72
Alberto22 will become famous soon enough
Default

you gained horse power but at the top end buy doing this you took away from your low end torque. In a sense you took away a little giddy up.
__________________
The best way to a fisherman's heart is through his fly!
MODS. f1 bakflip, rain guards, Mopar bug deflector, husky floor liners, chrome gas cover, westin side steps,steal craft brush guard,Piaa fog lights, painted calipers, sport hood, KENWOOD EXCELON DNX9980HD with cmos 300 camera, Magnaflow 14"
Reply With Quote
  #5  
Old 01-21-2015, 08:22 AM
hemiexp04 hemiexp04 is offline
Banned
 
Join Date: Mar 2012
Posts: 243
Gender: Male
Vehicle: 2014 blacktop qq 4wd 8speed
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:11
hemiexp04 is on a distinguished road
Default

Had simular results when I did my muffler delete last week. I don't think it hurt performance too much to be worried about tho. I honestly wouldn't worry about it. You'll gain it back with a tune. My truck ran 14.6 stock. Muffler delete vararam and canned 93 diablo then I ran 14.1
Reply With Quote
  #6  
Old 01-21-2015, 08:32 AM
HammerHead's Avatar
HammerHead HammerHead is offline
USMC 0313

 
Join Date: Apr 2014
Location: GEORGIA
Posts: 943
Gender: Male
Vehicle: 2013 RCSB
Trim Level: Express
Color: SILVER
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 0
Rep:20
HammerHead is on a distinguished road
Default

Quote:
Originally Posted by Alberto22 View Post
you gained horse power but at the top end buy doing this you took away from your low end torque. In a sense you took away a little giddy up.
I was disappointed and happy at the same time; the sound of the Hemi motor with no muffler and no resonators is really amazing. It sounds like an old fashion muscle car. But losing torque by just swapping the muffler was a shock, stock headers with cats and stock Y pipe I figured would be plenty of back pressure. Good old fashion trial and error.
__________________
Geared and Tuned (Greene Racing Motivation) 14.0@96
Proud member of the 4 second club...
Reply With Quote
  #7  
Old 01-21-2015, 10:01 AM
Dadsgotahemi Dadsgotahemi is offline
Dodge Ram Forum Senior Member
 
Join Date: Jul 2014
Location: Dallas, GA
Age: 38
Posts: 131
Gender: Male
Vehicle: 2014 CC 4x4 8spd & 3.92's
Trim Level: Laramie
Color: White
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 0
Rep:15
Dadsgotahemi is on a distinguished road
Default

So are you running straight pipe after the cats or do you have a muffler in there?
__________________
2014 CC 4x4 8 speed & 3.92's
Reply With Quote
  #8  
Old 01-21-2015, 10:06 AM
HammerHead's Avatar
HammerHead HammerHead is offline
USMC 0313

 
Join Date: Apr 2014
Location: GEORGIA
Posts: 943
Gender: Male
Vehicle: 2013 RCSB
Trim Level: Express
Color: SILVER
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 0
Rep:20
HammerHead is on a distinguished road
Default

Quote:
Originally Posted by Dadsgotahemi View Post
So are you running straight pipe after the cats or do you have a muffler in there?
No straight pipe, it still 2.5 into 3'' but with the muffler removed with a FLowmaster Y pipe and 2.5 out.
__________________
Geared and Tuned (Greene Racing Motivation) 14.0@96
Proud member of the 4 second club...
Reply With Quote
  #9  
Old 01-21-2015, 10:22 AM
Dadsgotahemi Dadsgotahemi is offline
Dodge Ram Forum Senior Member
 
Join Date: Jul 2014
Location: Dallas, GA
Age: 38
Posts: 131
Gender: Male
Vehicle: 2014 CC 4x4 8spd & 3.92's
Trim Level: Laramie
Color: White
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 0
Rep:15
Dadsgotahemi is on a distinguished road
Default

I'm no expert but it would seem to me the closer to the engine the better for the "y" as it would keep the exhaust from "bottlenecking" further down the line. An "x" pipe may help out as they are supposed to be better at equalizing the exhaust flow and scavaging.
__________________
2014 CC 4x4 8 speed & 3.92's
Reply With Quote
  #10  
Old 01-21-2015, 02:21 PM
HammerHead's Avatar
HammerHead HammerHead is offline
USMC 0313

 
Join Date: Apr 2014
Location: GEORGIA
Posts: 943
Gender: Male
Vehicle: 2013 RCSB
Trim Level: Express
Color: SILVER
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 0
Rep:20
HammerHead is on a distinguished road
Default

Here is another look at it front the front to the back. 3'' pipe into a reverse Y pipe going 2.5 out.
Attached Images
File Type: jpg image.jpg (80.5 KB, 53 views)
__________________
Geared and Tuned (Greene Racing Motivation) 14.0@96
Proud member of the 4 second club...
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Advertisement






All times are GMT -4. The time now is 12:14 AM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
vB.Sponsors