PerformanceTrucks.net Forums

INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

How bad is it to?

Thread Tools
 
Search this Thread
 
Old 12-14-2008, 11:09 AM
  #1  
TECH Fanatic
Thread Starter
iTrader: (15)
 
NegraRCSB2X4auto's Avatar
 
Join Date: Oct 2006
Location: Texas
Posts: 1,601
Likes: 0
Received 0 Likes on 0 Posts
Default How bad is it to?
How bad is it to go WOT my fuel pressure drops to 50 psi but the afr is still 11.5?
NegraRCSB2X4auto is offline  
Reply Like
Old 12-14-2008, 11:17 AM
  #2  
TECH Fanatic
iTrader: (17)
 
sickREDsierra's Avatar
 
Join Date: Dec 2007
Location: Mobile, AL
Posts: 1,424
Likes: 0
Received 1 Like on 1 Post
Default
i think standard operating pressures should be around ~58 psi... as long as your AFR is okay, i would think its safe.

11.5 sounds about right for FI... IMO you should be fine.

would like to see it a bit higher at WOT though.
sickREDsierra is offline  
Reply Like
Old 12-14-2008, 11:21 AM
  #3  
TECH Fanatic
iTrader: (17)
 
sickREDsierra's Avatar
 
Join Date: Dec 2007
Location: Mobile, AL
Posts: 1,424
Likes: 0
Received 1 Like on 1 Post
Default
another question ... what your fuel setup?

looks like your a H/C with a supercharger? hopefully you are at least running a larger pump that can keep up.

what size/type pump are you running, and what size injectors?
sickREDsierra is offline  
Reply Like
Old 12-14-2008, 11:49 AM
  #4  
TECH Fanatic
Thread Starter
iTrader: (15)
 
NegraRCSB2X4auto's Avatar
 
Join Date: Oct 2006
Location: Texas
Posts: 1,601
Likes: 0
Received 0 Likes on 0 Posts
Default
stock pump 60#'s
NegraRCSB2X4auto is offline  
Reply Like
Old 12-14-2008, 11:59 AM
  #5  
TECH Junkie
iTrader: (10)
 
charcold-bowtie's Avatar
 
Join Date: Jul 2006
Location: Midland Texas
Posts: 3,198
Likes: 0
Received 0 Likes on 0 Posts
Default
justin said ur FP was falling fast.....
charcold-bowtie is offline  
Reply Like
Old 12-14-2008, 12:07 PM
  #6  
TECH Fanatic
Thread Starter
iTrader: (15)
 
NegraRCSB2X4auto's Avatar
 
Join Date: Oct 2006
Location: Texas
Posts: 1,601
Likes: 0
Received 0 Likes on 0 Posts
Default
Originally Posted by charcold-bowtie
justin said ur FP was falling fast.....
did justin break your tranny tell justin my truck died right after he left lol.
NegraRCSB2X4auto is offline  
Reply Like
Old 12-14-2008, 12:14 PM
  #7  
TECH Junkie
iTrader: (10)
 
charcold-bowtie's Avatar
 
Join Date: Jul 2006
Location: Midland Texas
Posts: 3,198
Likes: 0
Received 0 Likes on 0 Posts
Default
lol. No by no means did he do it. Just got it in there on friday. Valve body is way too aggresive. (vac modded)
charcold-bowtie is offline  
Reply Like

Trending Topics

Old 12-14-2008, 01:10 PM
  #8  
TECH Regular
iTrader: (4)
 
BlueMagicSS's Avatar
 
Join Date: Dec 2008
Location: Bay Area, CA
Posts: 486
Likes: 0
Received 0 Likes on 0 Posts
Default
If your AF ratio is fine then I wouldn't worry too much about it... but if you're still on the stock pump with a s/c... i'd upgrade it just for peace of mind...
BlueMagicSS is offline  
Reply Like
Old 12-14-2008, 01:12 PM
  #9  
FormerVendor
iTrader: (73)
 
Derek @ EDO's Avatar
 
Join Date: Nov 2005
Location: Baton Rouge, LA
Posts: 4,072
Likes: 0
Received 8 Likes on 4 Posts
Default
Try removing the vacuum line attached to your FPR on the rail. See if it drops after doing that. should be around 58 removed at idol.
Derek @ EDO is offline  
Reply Like
Old 12-14-2008, 01:13 PM
  #10  
TECH Fanatic
iTrader: (17)
 
sickREDsierra's Avatar
 
Join Date: Dec 2007
Location: Mobile, AL
Posts: 1,424
Likes: 0
Received 1 Like on 1 Post
Default
i cant understand why/how you would want to stay on a stock fuel pump with that many mods done?

i thought the stock pump was only good for around 400rwhp or so?
sickREDsierra is offline  
Reply Like



Advanced Search
Quick Reply: How bad is it to?


Reply Closed Thread Share

All times are GMT -5. The time now is 10:33 PM.