Fuel pressure and check engine light

joe46375 · February 8th, 2009, 03:04 PM

Ive got a 95 gt with a cai, cobra intake manifold, 70mm Tb, 255lph fuel pump,BBK adjustable FPR, headers, off road H, and flows, and gears and so on.. basically bolt ons and am wondering what i should i should be running around for fuel pressure? i cant seem to get it just right i think stock is like 39 but i dont know if that will be too rich with as much air as i have going in and out now.. also i have a check engine light that comes on when i have been driving for maybe a few minutes i think it has something to do with the EGR because i had to remove it when i did the intake manifold swap and thats when it started coming on, but i had an EGR simulator and it still comes on and i even ordered another one and tried it and it still comes on, it almost seems to run better when the light comes on though, is this normal?

Bullitt95 · February 8th, 2009, 05:00 PM

Since you still have stock unported heads and a stock cam, the fuel pressure should be set at the stock 39psi.

WildWill · February 8th, 2009, 08:04 PM

+1 and have the comp run for codes to see what the CEL is

flamedstang95 · February 9th, 2009, 11:21 AM

fuel pressure should be at 39. You're getting a CEL because you haven't deleted the EGR out of the computer. The simulators aren't worth the money. Do you have any plans to get the car tuned?

lowp51 · February 10th, 2009, 04:53 PM

is it even worth it to get rid of the egr?

WildWill · February 10th, 2009, 09:51 PM

nope. the only thing it's good for is cleaning up the engine bay. no other benefits. just leave it there. who cares?? lol

flamedstang95 · February 13th, 2009, 01:58 PM

Originally Posted by WildWill

nope. the only thing it's good for is cleaning up the engine bay. no other benefits. just leave it there. who cares?? lol

Dude, it cleans it up alot. If you delete the EGR and all that pollution shit on the passenger side plug changes are MUCH easier. When I put the 347 in I got rid of all that crap and plugged the holes in the back of the heads. I can't believe that I'm getting 20mpg combined city/hwy with it. Granny driving of course, nothing over 70.

February 8th, 2009, 03:04 PM	#1
joe46375 Newbie Join Date: Oct 2007 Posts: 16 iTrader: 0 reviews	Fuel pressure and check engine light Ive got a 95 gt with a cai, cobra intake manifold, 70mm Tb, 255lph fuel pump,BBK adjustable FPR, headers, off road H, and flows, and gears and so on.. basically bolt ons and am wondering what i should i should be running around for fuel pressure? i cant seem to get it just right i think stock is like 39 but i dont know if that will be too rich with as much air as i have going in and out now.. also i have a check engine light that comes on when i have been driving for maybe a few minutes i think it has something to do with the EGR because i had to remove it when i did the intake manifold swap and thats when it started coming on, but i had an EGR simulator and it still comes on and i even ordered another one and tried it and it still comes on, it almost seems to run better when the light comes on though, is this normal?

February 8th, 2009, 05:00 PM	#2
Bullitt95 Hardcore Enthusiast 1995 Mustang GT auto 13.546 @ 105.32 Join Date: Apr 2007 Location: Al Ain, UAE Posts: 1,452 iTrader: 0 reviews	Since you still have stock unported heads and a stock cam, the fuel pressure should be set at the stock 39psi. __________________ 243.5rwhp/284.2rwtq Mod list in My Garage

February 8th, 2009, 08:04 PM	#3
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	+1 and have the comp run for codes to see what the CEL is __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

February 9th, 2009, 11:21 AM	#4
flamedstang95 Regular 1995 Mustang GT Join Date: Jan 2008 Location: Magnolia, DE Posts: 386 iTrader: 0 reviews	fuel pressure should be at 39. You're getting a CEL because you haven't deleted the EGR out of the computer. The simulators aren't worth the money. Do you have any plans to get the car tuned? __________________ See garage for mods

February 10th, 2009, 04:53 PM	#5
lowp51 Regular 1995 mustang gt Join Date: Aug 2008 Location: Virginia Posts: 111 iTrader: 0 reviews	is it even worth it to get rid of the egr? __________________ If only superchargers grew on tree's

February 10th, 2009, 09:51 PM	#6
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	nope. the only thing it's good for is cleaning up the engine bay. no other benefits. just leave it there. who cares?? lol __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

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