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Out of fuel at 20psi???

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Old Feb 3, 2013, 12:48 PM
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Out of fuel at 20psi???

how are my injectors almost maxed out at 20psi?

At a load of 260 taper to 240 but im running out of fuel is there something im missing

not sure if this is a mechanical thing or tuning thing but I have tuned before and never had any issues
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Old Feb 3, 2013, 03:42 PM
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Originally Posted by steven121
how are my injectors almost maxed out at 20psi?

At a load of 260 taper to 240 but im running out of fuel is there something im missing

not sure if this is a mechanical thing or tuning thing but I have tuned before and never had any issues
You need to log TPS % so we have a better idea of whats going on.. What pump & injectors you running? Also note, 100% IDC in Evoscan, is not the true max margin of injectors. It goes up to a reported 125%, before it "max's" out.

What I do find interesting, you go full lean at about ~ 6000 rpm (ie. 18.4:1 AFR) all the way up to 6900 rpm according to your data logged wideband AFR.. Your AFRMAP is not accurate by any means, but your AFRMAP is proof that your logging your widebands' AFR incorrectly. What I mean is, look at your AFRMAP.. See how it follows the usual downward trend of AFR through WOT operations? See how your wideband AFR goes full lean at around ~ 6000 rpm? You're logging your wideband incorrectly.. Its either a voltage issue, or the function used in Evoscan.. This is not a fuel supply issue.

Last edited by BEKevo; Feb 3, 2013 at 08:53 PM.
Old Feb 3, 2013, 08:01 PM
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I also noticed the timing is wrong, is there any links that show how to fix up evoscan? My wideband was logging great earlier and I was able to see my afrs even after 6000 rpm. But they were getting lean as they increased so i richened the table. Ill look again tonight
Old Feb 3, 2013, 08:50 PM
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You need to figure out what's wrong first. Youre logging incorrectly.
Old Feb 4, 2013, 03:38 AM
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Also, a good idea to check for any kinked fuel lines. sometimes the easiest thing is the most obvious
Old Feb 4, 2013, 06:34 AM
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Well i downloaded the new evo scan besides the 2.7 is there a better software or should I download the old software? I have logged before on my old car and everything worked great.
Old Feb 5, 2013, 12:19 PM
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I've got 2.9
Old Feb 7, 2013, 04:04 AM
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may sound dumb but check the vac line to the FPR. Mine was going lean at 20psi and showing 75% IDC on 1450's. Kept putting fuel to the map and nothing. Pulled the T for my boost gauge and ziptied it and AFR's came down A LOT. How are you logging AFR's?
Old Feb 7, 2013, 06:47 AM
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Wideband with serial cable
Old Feb 7, 2013, 07:08 AM
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What does your wideband do when at WOT? Does it shoot down, and hold around ~ 11:1 AFR? All the way through the rpm range? Have a friend eyeball the gauge for you while you do a WOT pull, or take a video. Lift off fast, if you do lean AFR's.. If you haven't done this yet, you need to check it.. That's a quickest/ easiest way to check to see if you're logging correctly.
Old Feb 7, 2013, 09:58 AM
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After 5k rpm it leans out with dashes on wide band but i zip tied all the lines so we will see how it goes
Old Feb 7, 2013, 10:13 AM
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if its dashes at WOT you need to STOP IMMEDIATELY! Turn the boost down and make changes. This doesnt sound like running out of fuel, there is another problem, this thing is starving. What pump/inj? guessing this is on 93. Your a full 7 points or more too lean, no bueno

Last edited by black_beauty; Feb 7, 2013 at 10:15 AM.
Old Feb 7, 2013, 10:50 AM
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Fuel pump - 255
Injectors - stock

Im using the tephra now i will see how this thing works out
Old Feb 7, 2013, 11:07 AM
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stock 9 turbo?
Old Feb 8, 2013, 02:32 PM
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well found out the problem, my fpr hose was stretching, bought a new one and it holds the pressure amazing, turned up the boost to 26 pounds and getting ready to tune.

only issue is when I flash the tephra rom on my car, and re read it the map is based off the stock map? the tables are not big like they are supposed to


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