need opinions on fuel system options for 2002 supercharged G

4.6L Modular 4 valve engine and 4.6L Modular 2 valve engine
Post Reply
DirtyDirtyRacing
Sergeant
Sergeant
Posts: 42
Joined: Sat Jul 21, 2007 4:58 pm
Location: Bedford, VA
Contact:

need opinions on fuel system options for 2002 supercharged G

Post by DirtyDirtyRacing » Tue Jul 31, 2007 3:18 pm

My own personal street car is a 2002 Vortech supercharged ( paxton intercooled ) GT , I have a set of cobra pumps in it now , but I want to upgrade because I am getting a code P0190 everynow and then when I power shift , I figure either one of the pumps is not up to par probably even though they only have 6000 miles on them ....go figure .....I want to upgrade but I am leaning towards going with a return style fuel system vs. staying with the returnless because it just seems like it would be less headache and probably less money by the time I get it like I want it and return style systems just from my reading have less problems with pumps taking a crap on them ........ whats your guys take on this and if you guys say stay returnless whos got the best deal on switching to 2 GT supercar pumps and upgraded FPDM , 8an lines , etc.......
http://www.Dirtydirtyracing.com
2276 Magnolia Dr.
Bedford VA 24523
ph# 540-875-8722
Dynocom 1800X Loaded Chassis Dyno

The Sniper

Re: need opinions on fuel system options for 2002 supercharged G

Post by The Sniper » Tue Jul 31, 2007 3:45 pm

How much power is the car making? THere is a problem with the 99-04 Stangs and powershifting. The fuel press will spike to 5 volts and that inturn throws a code. What you have to do is use a 4.9volt zen. diode and drop anything above that to ground to keep the EEC from seeing the spike. I have made some add on (inline) device for something else, but it would work great for this, but it might be a little $$ for jsut this fix. The P0190 code is for a faulty sensor. So that is prob. what is going on. Let me know if this sounds like what you have.
The Sniper

DirtyDirtyRacing
Sergeant
Sergeant
Posts: 42
Joined: Sat Jul 21, 2007 4:58 pm
Location: Bedford, VA
Contact:

Re: need opinions on fuel system options for 2002 supercharged G

Post by DirtyDirtyRacing » Tue Jul 31, 2007 10:52 pm

The Sniper wrote:How much power is the car making? THere is a problem with the 99-04 Stangs and powershifting. The fuel press will spike to 5 volts and that inturn throws a code. What you have to do is use a 4.9volt zen. diode and drop anything above that to ground to keep the EEC from seeing the spike. I have made some add on (inline) device for something else, but it would work great for this, but it might be a little $$ for jsut this fix. The P0190 code is for a faulty sensor. So that is prob. what is going on. Let me know if this sounds like what you have.
The Sniper
brand new sensor , they say it comes from the pressure dropping below 28 psi at WOT , I have not datalogged the car long enough to make it do it , everytime I have had the Recon hooked up I havent had a chance to duplicate it , the car is running plenty rich about 11.4 air/fuel even on higher RPMS , but the fuel pressure does drop somewhere in the 30s on my gauge at times at WOT when it does throw this code , its just hard to watch everything and by the car not doing this all the time its hard to get a good reading on it ......seems like it does it more often after the car has been running over 20 miles or so on a trip ........gas tank full or not does not matter, I just think of the pumps is laying down on it when they are run over 20 miles or so .....and I dont want to spend more money on another set of cobra pumps and in order to put 2 focus or GT pumps in it I have to upgrade the wiring and FPDM .....and I dont want to spend money on this if I am just going to pull it out later and go return style .....whatever I do I wanna do it once .....car is only making around 400 rwhp right now .....
http://www.Dirtydirtyracing.com
2276 Magnolia Dr.
Bedford VA 24523
ph# 540-875-8722
Dynocom 1800X Loaded Chassis Dyno

User avatar
Sniper_Joe
Private First Class
Private First Class
Posts: 10
Joined: Mon Jul 23, 2007 2:42 pm
Location: Central Florida
Contact:

Re: need opinions on fuel system options for 2002 supercharged G

Post by Sniper_Joe » Fri Aug 03, 2007 3:35 pm

You could just set up the recon to record while you drive so you dont have to watch the screen. Then just go back and review the run when you get home.
1996 4.6 GT -----> 202rwhp - 274rwtq ------> SNIPER Tuned

http://www.snipertuning.com

DirtyDirtyRacing
Sergeant
Sergeant
Posts: 42
Joined: Sat Jul 21, 2007 4:58 pm
Location: Bedford, VA
Contact:

Re: need opinions on fuel system options for 2002 supercharged G

Post by DirtyDirtyRacing » Fri Aug 03, 2007 11:25 pm

Sniper_Joe wrote:You could just set up the recon to record while you drive so you dont have to watch the screen. Then just go back and review the run when you get home.

Yea I gotta do that and see if I can find out exactly what is going on with the car , I am down here at Bristol now at FFW , only got to make 3 passes so far , running in the 12.50 index street stang class with my fox and best pass so far has been a 12.69 so I need to find another tenth in the 60ft (1.8s) hopefully to shoot down the 3 guys that have made 12.5 passes so far ......I have a higher MPH than all 3 of those guys but they are autos and launching a 5 speed down here is a little harder since the starting line is on a hill ....
http://www.Dirtydirtyracing.com
2276 Magnolia Dr.
Bedford VA 24523
ph# 540-875-8722
Dynocom 1800X Loaded Chassis Dyno

thestangfreak
Private
Private
Posts: 7
Joined: Tue Aug 28, 2007 12:14 am
Location: San Antonio, TX

Re: need opinions on fuel system options for 2002 supercharged G

Post by thestangfreak » Thu Aug 30, 2007 12:33 am

Looking at this from the tech side. it sounds like your fuel pressure is to low, this would be even more problematic when car has been running for a while with pumps trying to keep up. when running the car, you have to remember that the heat will increase resistance in sensors. (normally not noticed because still in tolorences). WIth you power demand, you are probably pulling the psi down by itself. Do you have a fuel pressure regulator hooked up?
Ford V8 require 35 to 40 psi!!! I know this may sound high but I rechecked on Alldata as well.
Also, if you have a tech friend, have them put an o-scope on the injectors, ( don't have recon to know if it can do it, but would be impressed if it can) and check both the pulse width and dwell of the injectors to verify that you don't have an injector leak that would rob you psi under heavy load.



hope this helps :geek: :idea:

GOLFA89
Corporal
Corporal
Posts: 21
Joined: Wed Aug 15, 2007 6:23 pm

Re: need opinions on fuel system options for 2002 supercharged G

Post by GOLFA89 » Thu Apr 03, 2008 6:53 pm

i am puling mi her off this cars do sufer from fuel starvation
mi car must be arround 500-550hp
and mi presure drops to 20 ft after 4000
i think i am going to meke it return style in the tank like the chevrolet i got the pump from one and adapt it in tank i check the flow of the one i hade in car it take 23 sec to fill 500cc at 45 psi
and the chevrolet one did 12 sec to fill 500cc at 45 psi is a stong pump

and the presure droped about the same from 4000 to 20 psi

i set the presure in mi performance tune to +15 but stayed at 40 all the time

the best air fuel i could get after 4000 is 12.7 and rising :o :oops:

GOLFA89
Corporal
Corporal
Posts: 21
Joined: Wed Aug 15, 2007 6:23 pm

Re: need opinions on fuel system options for 2002 supercharged G

Post by GOLFA89 » Thu Apr 03, 2008 6:54 pm

i am puling mi her off this cars do sufer from fuel starvation
mi car must be arround 500-550hp
and mi presure drops to 20 ft after 4000
i think i am going to meke it return style in the tank like the chevrolet i got the pump from one and adapt it in tank i check the flow of the one i hade in car it take 23 sec to fill 500cc at 45 psi
and the chevrolet one did 12 sec to fill 500cc at 45 psi is a stong pump

and the presure droped about the same from 4000 to 20 psi

i set the presure in mi performance tune to +15 but stayed at 40 all the time

the best air fuel i could get after 4000 is 12.7 and rising :o :oops:

GOLFA89
Corporal
Corporal
Posts: 21
Joined: Wed Aug 15, 2007 6:23 pm

Re: need opinions on fuel system options for 2002 supercharged G

Post by GOLFA89 » Thu Apr 03, 2008 7:08 pm

i am puling mi her off this cars do sufer from fuel starvation
mi car must be arround 500-550hp
and mi presure drops to 20 ft after 4000
i think i am going to meke it return style in the tank like the chevrolet i got the pump from one and adapt it in tank i check the flow of the one i hade in car it take 23 sec to fill 500cc at 45 psi
and the chevrolet one did 12 sec to fill 500cc at 45 psi is a stong pump

and the presure droped about the same from 4000 to 20 psi

i set the presure in mi performance tune to +15 but stayed at 40 all the time

the best air fuel i could get after 4000 is 12.7 and rising :o :oops:

GOLFA89
Corporal
Corporal
Posts: 21
Joined: Wed Aug 15, 2007 6:23 pm

Re: need opinions on fuel system options for 2002 supercharged G

Post by GOLFA89 » Fri Apr 11, 2008 2:48 pm

i am going to twin super car pumps and return system with lines from lethal performance
and will do the wiring to feed all the ampers it needs with relays
and change the sniper tune file to return fuel system

if some one now a beter choise for a 550 hp daily driver with supercharger let me now


:cry:

User avatar
cdjnight
Specialist
Specialist
Posts: 37
Joined: Sun Sep 16, 2007 10:23 pm
Location: Council Bluffs Iowa

Re: need opinions on fuel system options for 2002 supercharged G

Post by cdjnight » Tue Apr 22, 2008 10:49 pm

kenne bell BAP on GT pump
2003 Mustang GT, 5.4L Triton V8, Comp 270's gears and springs, Intercooled Turbonetics T76, 60lb injectors, Flowmaster Single Chamber, B&M Holeshot 3000, Racegate, Sniper Commando Tuning, Magna return fuel system, MSD Mod 6

Post Reply

Return to “1996 - 2004 Mustang and Cobra”