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08-28-2017, 11:38 PM
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#1 |
 
Drives: 2012 ZL1 Ashen Grey Join Date: Apr 2017
Location: NW Indiana
Posts: 378
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Fuel Pressure....
So as us see the mods I have.... I've been monitoring my fuel pressure with SCT scanner... At cruising speed it stays a constant 50-52psi.... At WOT I've seen it reach as high as 62psi.... Are these numbers ok.... Getting ready to install a 18% this week.... Is my tuner able to up the pressure if need be.... Any thoughts...
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2012 M6
Kooks 1 7/8, off road pipes , full corsa exhaust ID1300s/ 22% lower / 2.5 upper, JLT CAI, DSX flex fuel, DSX AUX fuel pump. S19 cam Tuned and built by Speed Inc 635/632-93 octane 725/738-E85 |
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08-29-2017, 09:44 AM
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#2 |
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KaBoom1701
Drives: 13' ZL1 Red M6 Join Date: Dec 2012
Location: I.E. SoCal (Yucaipa)
Posts: 8,630
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Seems about right to me.
Anything over a 10% pulley and you should have a professional tuner tune your car. It's not worth dropping a cylinder due to low fuel pressure and your engine go boom. You may even be at the edge of needing larger injectors....
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Mods:
Roto-Fab Intake, WW Res. kit & Big Gulp Air Scoop, Elite Catch Can, ATI Super Damper & 18% OD Pulley, LF Idler pulley bracket, Metco CC breather, ID850 Injectors, Stainless Power Headers w/ ceramic coating, TR71X Spark Plugs, JMS Fuel Pump Booster, Bo White TB, Tuned by Ted @ Jannetty Racing, Ron Davis HX, D3 Reservoir, Pfadt 1" Springs, Moreno Camber Plates, ZL1 Addons Splitter guard washers, Tow Hook kit & rock guards, Hurst Shifter Billet Plus 6 Speed Short Shifter, ZL1 DRL lighting harness, ZL1 Recaro Seats. |
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08-29-2017, 11:54 AM
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#3 |
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ZL1 Pilot
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Cruise - 55psi
WOT - 65psi
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 GP Tuning 2.5 Cam, RPS Carbon Twin Clutch, Ported Blower, Kook's Headers, Cold Air Inductions CAI, ID850's, 9.17 Lower, 2.5 Upper, JMS BAP, Pedders Front Radius Arm Inserts, Whiteline Subframe Inserts, Tuned by me with HP Tuners Idle Clip Link...........https://www.youtube.com/watch?v=gTL8S9eHwbs |
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08-29-2017, 07:52 PM
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#4 |
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Drives: 2012 ZL1 Ashen Grey Join Date: Apr 2017
Location: NW Indiana
Posts: 378
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So is my tuner able to turn it up?
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2012 M6
Kooks 1 7/8, off road pipes , full corsa exhaust ID1300s/ 22% lower / 2.5 upper, JLT CAI, DSX flex fuel, DSX AUX fuel pump. S19 cam Tuned and built by Speed Inc 635/632-93 octane 725/738-E85 |
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08-29-2017, 07:54 PM
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#5 |
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ZL1 Pilot
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No. Need boost a pump. The goal is to maintain 65 at wot.
If you're holding 62 and tuned that way, it's fine for now
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GP Tuning 2.5 Cam, RPS Carbon Twin Clutch, Ported Blower, Kook's Headers, Cold Air Inductions CAI, ID850's, 9.17 Lower, 2.5 Upper, JMS BAP, Pedders Front Radius Arm Inserts, Whiteline Subframe Inserts, Tuned by me with HP Tuners Idle Clip Link...........https://www.youtube.com/watch?v=gTL8S9eHwbs |
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08-30-2017, 01:52 AM
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#6 |
 
Drives: 2013 zl1 Join Date: Jun 2015
Location: nj
Posts: 142
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I run the same 50-53 psi cruising and 63 psi at wot
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675RWHP 622RWTQ Jannetty Tuned
10.76 @ 131.6 1.6 0-60" |
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09-01-2017, 07:04 PM
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#7 |
 
Drives: 2014 ZL1 M6 Join Date: May 2017
Location: Dunedin, FL
Posts: 99
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Get a BAP or AUX fuel pump
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The Widow Maker
2014 ZL1, M6 Kooks LTs, Air Raid CAI, 2.55 upper pulley, D3 reservoir, Elite catch can, ID 850s, flex fuel, DMS auxiliary fuel pump, fasterproms tune |
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