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 > Drag Racing Discussion


Notices

Drag Racing Discussion Post your questions and info about how to best get these beasts down the 1320!


Latest Vendor News
AutoAnything
Addictive Desert Designs!
Bayou Goat Mounts

Reply
 
Thread Tools
  #11  
Old 06-15-2012, 04:42 PM
snrusnak's Avatar
snrusnak snrusnak is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: Orlando
Age: 27
Posts: 13,310
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: SLT
Color: White
Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 12
Rep:1385
snrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud of
Default

During closed loop the a/f ratio will remain around stoich(14.7:1). Headers will lean your a/f ratio during open loop(WOT). So when you're on the track running WOT you are running a little lean. Probably not very lean, but you'd benefit from a tune. Without a way to tune and adjust the a/f ratio, there really isn't much you can do.

I'm not really commenting on your times or anything like that, just telling you that with stock tune and long tubes your a/f ratio is a little lean during open loop. And there's not really anything you can do about it unless you tune it.
__________________
Sean

Breathing in and out is good enough for me.
Reply With Quote
Sponsored links
  #12  
Old 06-25-2012, 05:03 PM
roo roo is offline
Dodge Ram Forum Senior Member!
 
Join Date: Dec 2011
Location: texas
Age: 54
Posts: 424
Gender: Male
Vehicle: 2012 Tradesman, 2013 Express
Color: Silver Tradesman, White Express
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:39
roo is on a distinguished road
Default

At WOT, closed loop operation will go into enrichment, richer than 14.7. 14.7 a/f will be at part throttle open loop operation.
Reply With Quote
  #13  
Old 06-25-2012, 08:59 PM
1500V10's Avatar
1500V10 1500V10 is offline
Dodge Ram Forum Newcomer
 
Join Date: Oct 2011
Location: rising sun md
Age: 23
Posts: 7
Gender: Male
Vehicle: 2012 ram 1500
Trim Level: express
Color: true blue pearl
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:10
1500V10 is on a distinguished road
Default

At WOT my a/f is around 11.2-11.4, then around 5000 rpm it goes to 10.5. with a 125 hp dry shot the a/f is 12.5
__________________
2012 RCSB 2wd Ram express, 12.81@107
Reply With Quote
  #14  
Old 07-01-2012, 08:07 PM
snrusnak's Avatar
snrusnak snrusnak is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: Orlando
Age: 27
Posts: 13,310
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: SLT
Color: White
Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 12
Rep:1385
snrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud of
Default

Quote:
At WOT, closed loop operation will go into enrichment, richer than 14.7. 14.7 a/f will be at part throttle open loop operation.
You have closed loop and open loop reversed.
__________________
Sean

Breathing in and out is good enough for me.
Reply With Quote
  #15  
Old 07-04-2012, 08:36 AM
roo roo is offline
Dodge Ram Forum Senior Member!
 
Join Date: Dec 2011
Location: texas
Age: 54
Posts: 424
Gender: Male
Vehicle: 2012 Tradesman, 2013 Express
Color: Silver Tradesman, White Express
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:39
roo is on a distinguished road
Default

Your right, but every gasoline engine goes into enrichment at wot. You can make more power by leaning it out but at the price of higher egt's and the tendency to get into knock. Hard on exhaust valves also.
Reply With Quote
  #16  
Old 07-05-2012, 08:32 AM
snrusnak's Avatar
snrusnak snrusnak is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: Orlando
Age: 27
Posts: 13,310
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: SLT
Color: White
Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 12
Rep:1385
snrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud of
Default

It doesn't really go into an "enriched" mode at WOT at least not like cold start fuel enrichment, it just goes to open loop and ignores some sensors and reverts to preset fuel and timing maps. Whether those maps are leaner or richer than 14.7:1 depends on how they are written. I'm not sure how most vehicles are stock, I'd assume slightly leaner because at WOT you want more power.
__________________
Sean

Breathing in and out is good enough for me.
Reply With Quote
  #17  
Old 07-05-2012, 10:58 AM
roo roo is offline
Dodge Ram Forum Senior Member!
 
Join Date: Dec 2011
Location: texas
Age: 54
Posts: 424
Gender: Male
Vehicle: 2012 Tradesman, 2013 Express
Color: Silver Tradesman, White Express
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:39
roo is on a distinguished road
Default

They go rich to avoid knock and very high exhaust temps.
Reply With Quote
  #18  
Old 07-12-2012, 02:50 PM
RamTex's Avatar
RamTex RamTex is offline
Dodge Ram Forum Senior Member!
 
Join Date: Apr 2010
Location: Bellevue, Ne
Age: 28
Posts: 1,449
Gender: Male
Vehicle: 2009 Dodge Ram 6.6L Hemi!
Trim Level: Crew Cab Sport 4x4
Color: Stone White
Rep Power: 5
Rep:366
RamTex is just really niceRamTex is just really niceRamTex is just really niceRamTex is just really nice
Default

Put it in manual mode in 1st give it i slight bit of gas at the line just to take the slack out of the drive train and punch it. if it wont spin then that means you have some excellent track prep where you go... Thats not bad for a 2wd what was the DA?
__________________

"New Project" 1969 Road Runner
BV Heads,K1 Crank and Rods,Corrillo Pistons,ARP Head, Main, Side Studs and Rod Bolts,Spartan Eagle Cam,6.1 Manifold,Fastman 85mm,LMI Hammer, ARH's,3000TC,Hemifever Tuning
Reply With Quote
  #19  
Old 07-12-2012, 03:57 PM
JasonRB2k1 JasonRB2k1 is offline
Dodge Ram Forum Junior Member
 
Join Date: Sep 2011
Location: Dallas
Age: 31
Posts: 37
Gender: Male
Vehicle: 2011 Dodge Ram
Trim Level: Hemi Express
Color: Mineral Gray
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:10
JasonRB2k1 is on a distinguished road
Default

I have no idea how to calculate DA, but it was hot and humid as all get out! I have worked as a dealership tech for the past 12 years, and there is no question in my mind that this is simply a torque management issue. The track prep was almost too good to be honest, but even if I try to launch my truck on some nice backwood road with an empty tank and no traction control on you can just feel the truck bog down as soon as you gun it. Like I mentioned before, I can be driving on dry pavement at 10 mph and it will fight spinning the tires with traction control on, but when you try and do a straigh dig it just bogs all the way down.
Reply With Quote
  #20  
Old 07-12-2012, 07:23 PM
snrusnak's Avatar
snrusnak snrusnak is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: Orlando
Age: 27
Posts: 13,310
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: SLT
Color: White
Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 12
Rep:1385
snrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud of
Default

It probably is TM. Keep in mind that even with traction control off, it is not 100% off. If you floor it from the get go you might be starting to break the tires loose and the traction control is cutting throttle.

I'd try hammering the pedal to like 1/2-3/4 throttle initially them quickly increase it to full pedal and see if it launches better. It might take several tries to get it down. And it could still of course be something else...
__________________
Sean

Breathing in and out is good enough for me.
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 02:49 AM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum