Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

fuel pressure vs idle/cruise AFR?

Thread Tools
 
Search this Thread
 
Old 08-13-2009, 07:25 PM
  #1  
TECH Resident
Thread Starter
 
ayousef's Avatar
 
Join Date: Aug 2008
Location: Dubai
Posts: 910
Likes: 0
Received 0 Likes on 0 Posts
Default fuel pressure vs idle/cruise AFR?

Well, im trying to figure this out, and while I could do the check myself something came across my mind and im out of town so a little help would be appreciated.

Question is, a rough figure on how much could 2-3PSI of increased fuel pressure incfluence idle and cruise AFR

427 TT, 80lbs high-imp injectors, 2.5bar SD tune.
Old 08-14-2009, 09:33 AM
  #2  
LS1TECH Sponsor
iTrader: (16)
 
Lonnies Performance's Avatar
 
Join Date: Feb 2007
Location: Pittsburgh, PA
Posts: 2,662
Likes: 0
Received 2 Likes on 2 Posts

Default

it will change it approx 2-2.5%.
Old 08-14-2009, 10:28 AM
  #3  
LS1TECH Sponsor
iTrader: (1)
 
Schwanke Engines's Avatar
 
Join Date: Dec 2007
Location: Springfield, MN
Posts: 849
Likes: 0
Received 3 Likes on 2 Posts
Default

% Change in flow = Square Root of(P2/P1)

so, lets say you have 60PSI and it increases to 63

You would have sqrt(63/60)= 1.0246950765959598383221038680521




All times are GMT -5. The time now is 11:03 PM.