3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!
Sponsored by:
Sponsored by: DashLynx

Had some time with a DRB (watching the MP-8)

Thread Tools
 
Search this Thread
 
Old 10-18-2006, 09:10 PM
  #1  
Registered User
Thread Starter
 
Asher's Avatar
 
Join Date: Dec 2004
Location: STL Missouri
Posts: 557
Received 0 Likes on 0 Posts
Had some time with a DRB (watching the MP-8)

Well the other night I got my hands on a real good DRB (from the Dodge dealer) for an hour or so... here is what I found out...

my BHAF pulls in air that is about 20 degrees hotter than the outside temp.

My rail pressure (stock) will peak in the 28K range

My boost pressure was typically hitting 35 PSI at stock settings?? (didn't realize that it was that high stock).

The MP-8 (from 3/4 turn and up) fools the computer into thinking it is only recieving 11K at the rail so I guess it is really maxing out the PSI since the computer will never see anything more. And I am guessing it is fooling boost also, but I could never get anything other than a 35 PSI reading from stock to max setting (@WOT).

My TC lock up switch that I wired up with directions from someone here is not right, I am not getting a check engine light, but the DRB picked up a "low TC lock-up voltage" signal. So now I will have to figure out how to fix that little issue.

Just thought you guys would like some interesting tid bits...
Old 11-13-2006, 11:53 PM
  #2  
Registered User
 
BlueDually's Avatar
 
Join Date: Jan 2005
Location: Central Alberta
Posts: 492
Likes: 0
Received 0 Likes on 0 Posts
So the mp-8 does not go above stock pressures, just reaches it at lower rpm.

Does the ez raise presures above stock psi or does it behave like an mp-8 to?
Old 11-14-2006, 12:12 AM
  #3  
Banned
 
BigDan's Avatar
 
Join Date: Sep 2004
Location: Pollock Pines, CA
Posts: 507
Likes: 0
Received 0 Likes on 0 Posts
Thats alot of boost for a stock 04 305/555
Old 11-14-2006, 09:01 AM
  #4  
Registered User
 
qzilla's Avatar
 
Join Date: Jun 2003
Posts: 3,741
Likes: 0
Received 0 Likes on 0 Posts
The DRB reads PSIA which includes the atmospheric pressure. Subtract 14.7 and you will get the boost number your truck thinks it is seeing.
Old 11-14-2006, 09:23 AM
  #5  
Registered User
 
XLR8R's Avatar
 
Join Date: Nov 2005
Location: Pattonville, Texas
Posts: 7,785
Likes: 0
Received 2 Likes on 2 Posts
My BHAF delivers air to the intake manifold with only a 10-20*F differential, as measured just before the grid heaters. I'm making a cowl induction hat for it in the shop this week, since the temperature differential from ambient should be much higher during extended periods of higher boost (I can hit 20*F differential while under 30psi boost for 20 seconds).
Old 11-14-2006, 12:21 PM
  #6  
Registered User
 
bigdav160's Avatar
 
Join Date: Oct 2005
Location: Way South
Posts: 320
Received 1 Like on 1 Post
I am not getting a check engine light, but the DRB picked up a "low TC lock-up voltage" signal. So now I will have to figure out how to fix that little issue.
Not all codes will trigger a MIL.

P2789 ??

This DTC will set if the voltage detected by the ECM for the Torque Converter Clutch Solenoid Control circuit is different than the expected voltage.
Old 11-14-2006, 06:08 PM
  #7  
Banned
 
BigDan's Avatar
 
Join Date: Sep 2004
Location: Pollock Pines, CA
Posts: 507
Likes: 0
Received 0 Likes on 0 Posts
Since thats a caculated boost number I get a gauge to verify it since that's the most boost ive ever seen a near stock 305 make
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
realoldandcrust
3rd Gen Engine and Drivetrain -> 2007 and up
6
02-12-2008 09:25 PM
NHdodgeman
3rd Gen High Performance and Accessories (5.9L Only)
2
01-29-2007 09:30 PM
abc4yew
3rd Gen Engine and Drivetrain -> 2003-2007
0
01-10-2007 03:34 PM
abc4yew
3rd Gen High Performance and Accessories (5.9L Only)
13
07-28-2006 09:47 AM
smokindog
Performance and Accessories 2nd gen only
4
07-20-2005 01:54 PM



Quick Reply: Had some time with a DRB (watching the MP-8)



All times are GMT -5. The time now is 03:23 PM.