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07-22-2003, 04:43 PM | #1 |
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fuel pressure
This year I added 1.7 rocker arms. I was wondering if I need to turn up the fuel pressure from my set up last year I was running 50 psi with the line off. I might go to the track this weekend so I thought I would ask.
Thanks for any info
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86 hatch 5 speed 3.73 gears gt40p heads,gt 40 intake,headers 70 mm tb 195 lph pump off road h-pipe 2.5 exhaust this year rear air bag electric fan 1.7 rockers no sway bar Best et 14.09 last year 60 ft 1.98 |
07-22-2003, 04:49 PM | #2 |
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No, there is no need to turn up your fuel pressure your car has to be running hella rich as it is.
I am only runnng 43 psi of fuel pressure WOT. When you say with the line off are you saying that you are not running a vacuum line on you regulator?
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
07-22-2003, 04:57 PM | #3 |
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The plug look real nice at the track but yes it does run rich on the street at that pressure I turn it down when I drove home I'll just try aroud there. That was with the vacum line off. I was thinking that if the engine is taking more air in I would need more fuel. This is with 19lb injectors
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86 hatch 5 speed 3.73 gears gt40p heads,gt 40 intake,headers 70 mm tb 195 lph pump off road h-pipe 2.5 exhaust this year rear air bag electric fan 1.7 rockers no sway bar Best et 14.09 last year 60 ft 1.98 |
07-22-2003, 05:13 PM | #4 | |
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Quote:
I read and set mine with the line off than reconnect it when done.
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07-22-2003, 10:11 PM | #5 |
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Dont mean to hijack this post..just a quick question. What does pulling the vacuum line off do to your fuel pressure reading? I checked mine a while back at idle with the line connected and got 38-40. Does it go up with the vacuum disconnected?
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'91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60' |
07-23-2003, 12:42 AM | #6 |
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run 41 psi with vacuum off, with your setup.
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07-23-2003, 05:51 AM | #7 | |
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07-23-2003, 08:46 AM | #8 | |
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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