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05-07-2008, 06:41 PM
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#1 (permalink) |
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Senior Member
Join Date: Sep 2007
Posts: 108
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Fuel preasure bouncing around
Anyone have problems with fuel preasure not being steady? I have a GT supercar pump in Mustang GT canister and was working fine. I'm curious if its the pump or the controller taking a crap. Fuel psi bounces from as low as 20 to as high as 50 and most of the time is jumps from 30 to 45 at idle and at a steady throttle position.
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 Momentum is everything till you drive off a cliff!2003 Mustang GT, 5.4L Triton V8(LOL), Comp 270's gears and springs, Intercooled Precision T63, 42lb injectors, Flowmaster 3.5" Single Chamber, B&M Holeshot 3000, Racegate, Sniper Commando Tuning, Kenne Bell BAP, LM1 wideband driving factory computer, Best e.t before it through a rod in the 4.6L, 8.33@90mph in the 1/8th. on factory tires. http://www.youtube.com/watch?v=DaJ2yQH1Ezs http://www.youtube.com/watch?v=J1hiMJy3ezk |
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05-08-2008, 05:54 AM
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#2 (permalink) |
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Super Moderator
Join Date: Aug 2005
Location: Randallstown, Md
Posts: 2,362
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if I'm not mistaken, when using a GT(40) pump you need toget the upgraded FPDM from Mark at Zone Five Performance, if you'd have used a SVT Focus pump, it wouldn't be a problem.....
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Randy Stinchcomb contact info: Liberty Ford of Baltimore 410-655-2000 parts ext 5618 Got Thumb-Burn? go here for help=> www.thumbdinger.com come Fish wth us @: www.AtlanticAnglers.com |
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05-08-2008, 01:56 PM
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#3 (permalink) | |
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Senior Member
Join Date: Sep 2007
Posts: 108
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Quote:
__________________
Momentum is everything till you drive off a cliff!2003 Mustang GT, 5.4L Triton V8(LOL), Comp 270's gears and springs, Intercooled Precision T63, 42lb injectors, Flowmaster 3.5" Single Chamber, B&M Holeshot 3000, Racegate, Sniper Commando Tuning, Kenne Bell BAP, LM1 wideband driving factory computer, Best e.t before it through a rod in the 4.6L, 8.33@90mph in the 1/8th. on factory tires. http://www.youtube.com/watch?v=DaJ2yQH1Ezs http://www.youtube.com/watch?v=J1hiMJy3ezk |
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05-09-2008, 05:07 AM
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#4 (permalink) | |
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Super Moderator
Join Date: Aug 2005
Location: Randallstown, Md
Posts: 2,362
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Quote:
 as there are @5 Focus pumps but only 1 SVT Focus pump, we sell them for $95.00 + shipping
__________________
Randy Stinchcomb contact info: Liberty Ford of Baltimore 410-655-2000 parts ext 5618 Got Thumb-Burn? go here for help=> www.thumbdinger.com come Fish wth us @: www.AtlanticAnglers.com |
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05-09-2008, 01:35 PM
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#5 (permalink) | |
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Senior Member
Join Date: Sep 2007
Posts: 108
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Quote:
Dam wish I knew that before but I ordered the Steeda Focus pump.
__________________
Momentum is everything till you drive off a cliff!2003 Mustang GT, 5.4L Triton V8(LOL), Comp 270's gears and springs, Intercooled Precision T63, 42lb injectors, Flowmaster 3.5" Single Chamber, B&M Holeshot 3000, Racegate, Sniper Commando Tuning, Kenne Bell BAP, LM1 wideband driving factory computer, Best e.t before it through a rod in the 4.6L, 8.33@90mph in the 1/8th. on factory tires. http://www.youtube.com/watch?v=DaJ2yQH1Ezs http://www.youtube.com/watch?v=J1hiMJy3ezk |
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Today, 02:41 PM
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#6 (permalink) |
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Senior Member
Join Date: Sep 2007
Posts: 108
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Fuel preasure is good now I still have a part throttle surge that I can't get rid of, any ideas, I cleaned IAC new O2 sensors and checked for vaccuum leaks. How about in my tune??? any idea where to go in the program to get rid of this???? HElp please
__________________
Momentum is everything till you drive off a cliff!2003 Mustang GT, 5.4L Triton V8(LOL), Comp 270's gears and springs, Intercooled Precision T63, 42lb injectors, Flowmaster 3.5" Single Chamber, B&M Holeshot 3000, Racegate, Sniper Commando Tuning, Kenne Bell BAP, LM1 wideband driving factory computer, Best e.t before it through a rod in the 4.6L, 8.33@90mph in the 1/8th. on factory tires. http://www.youtube.com/watch?v=DaJ2yQH1Ezs http://www.youtube.com/watch?v=J1hiMJy3ezk |
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