11-18-2009, 02:04 AM
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#1
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Regular Member
Join Date: May 2007
Location: Idaho
Posts: 204
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Boost port?
I'm just wondering if anyone can tell me were to hook up a boost vacumm gauge on an lt1. I've tried on the side of the throttle body but I only get boost and no vaccume reading, I've also tired on the driver side and I get vaccum readings but no boost reading. Were did everyone else hook up the vaccumm line.
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1995 Firebird Formula, 5.7 lt1 350, 58mm throttlebody, headers, powerdyne supercharger, MSD ignition, FMU, 275/40/17 front and 315/35/17 rear tires.
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11-18-2009, 05:54 AM
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#2
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Regular Member
Join Date: Nov 2009
Posts: 26
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What kind of boost you have? Turbo or sc.
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11-18-2009, 08:00 AM
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#3
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LS1LT1.com Sponsor
Join Date: Apr 2009
Location: Tampa Fl
Posts: 147
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It needs to be on the intake manifold behind the throttle body. Im trying to figure out how you got a port to read vacuum but wouldn't read boost. I can understand the port that only saw boost but any port that sees vacuum should also see boost on a FI engine.
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11-18-2009, 10:31 AM
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#4
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Regular Member
Join Date: May 2007
Location: Idaho
Posts: 204
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yea I kinda thought it was weird, my only thought is mabee the gauge is bad.
__________________
1995 Firebird Formula, 5.7 lt1 350, 58mm throttlebody, headers, powerdyne supercharger, MSD ignition, FMU, 275/40/17 front and 315/35/17 rear tires.
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11-18-2009, 11:02 AM
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#5
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Supporting Member
Join Date: Oct 2007
Location: Miami, FL
Posts: 904
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T it up here.
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1997 Chevrolet Camaro Z28 T-56
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2006 Yamah YZF-R6
Bone Stock
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11-18-2009, 08:38 PM
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#6
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Regular Member
Join Date: May 2007
Location: Idaho
Posts: 204
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yea thats were its hooked up right now, but I'm not seeing anything but vacum. And the supercharger seems to be running fine and still burning the tires.
__________________
1995 Firebird Formula, 5.7 lt1 350, 58mm throttlebody, headers, powerdyne supercharger, MSD ignition, FMU, 275/40/17 front and 315/35/17 rear tires.
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11-19-2009, 12:29 AM
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#7
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Supporting Member
Join Date: May 2007
Location: Good Ole Wv
Posts: 4,006
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Take a air compressor and blow air in the line. Only a little and see it it will read psi that way. Either it is the gauge or you have a boost leak somewhere. That or the gauge line.
__________________
1995 T/A M6: -Tops,390 Eagle Forged Fully Built Stroker,Procharged at 12lb'z(Currently Down)
1995 T/A M6:Hard Top,Lowered 1.5in. on B&R Springs,3pt. Subframe Connectors,Pro 5.0 short throw,K&n Cold Air Intake,2 1/2 Cowl industion hood,Ws6 Wheels,Cc502 cam,No Emissions, Descreened Maf,Tb Air Foil,1.6 Roller Rockers, Professional Products Sfi approved balancer with Steel Keyed Hub,New Opti,Msd 8.5 wires,Ngk tr55ix plugs,Pacesetter Longtube Race Headers, ORY & Flowmaster Catback
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12-02-2009, 08:33 AM
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#8
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LS1LT1.com Sponsor
Join Date: Apr 2009
Location: Tampa Fl
Posts: 147
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Only other thing is an internal pcv of some sort? Im not 100% familiar with the LTx engines.
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12-02-2009, 11:47 PM
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#9
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Supporting Member
Join Date: May 2007
Location: Good Ole Wv
Posts: 4,006
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Mine was fine with the pcv valve installed in the intake. But I ran a filter on the valve cover. So that shouldn't be his problem. Or atleast I wouldn't think so.
__________________
1995 T/A M6: -Tops,390 Eagle Forged Fully Built Stroker,Procharged at 12lb'z(Currently Down)
1995 T/A M6:Hard Top,Lowered 1.5in. on B&R Springs,3pt. Subframe Connectors,Pro 5.0 short throw,K&n Cold Air Intake,2 1/2 Cowl industion hood,Ws6 Wheels,Cc502 cam,No Emissions, Descreened Maf,Tb Air Foil,1.6 Roller Rockers, Professional Products Sfi approved balancer with Steel Keyed Hub,New Opti,Msd 8.5 wires,Ngk tr55ix plugs,Pacesetter Longtube Race Headers, ORY & Flowmaster Catback
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01-17-2010, 07:22 PM
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#10
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Regular Member
Join Date: Nov 2009
Posts: 23
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i was reading this thread and no one responded a solution. I am having the same issue,i moved the gauge to the drivers side of the intake and i'm only getting vacuum readings. Please respond
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01-18-2010, 01:24 PM
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#11
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Supporting Member
Join Date: Mar 2007
Posts: 16
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Mine is hooked up the same way as 2fast4u ,I get boost and vac readings
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01-18-2010, 06:12 PM
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#12
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Regular Member
Join Date: Nov 2009
Posts: 23
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hey man do you have any pic's so i could see exactly how you have it??
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