Installing boost and A/F gauges
06-27-2007, 06:21 AM
#1
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Join Date: Apr 2004
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Posts: 128
Installing boost and A/F gauges
after a day fiddelingand a ton of searching on the wab and fourms i can't find what i'm looking for... i need help, or a how to guide on installing a boost, and A/f gauge... i got them to light up and turn on... but the readings are not correct... 1st the boost gauge is only reading the vacume... according to the diagram it came with thats all you needed to tap was a vacume line so did and it's notreading boost presure...need pics and details please of where to tap into...then with the A/F gauge i don't know what wire to splice into for the actual reading of the A/f ratio... if anyone has installed their gauges or know of some where to get info for a 2002 GT please help me out.
06-27-2007, 06:34 AM
#2
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Join Date: Jan 2004
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Posts: 12,575
RE: Installing boost and A/F gauges
This is probably a retarded question, but from you whp numbers I have to ask.
You do have either a turbo or supercharger right? If so, any vaccum line should show boost when your building it. I plugged into the line coming out ofthe plenum area, it already hada T so I pipped in another T and there you have it. FYI, its only really going to show boost under a load, that is to say in gear at WOT above about 3000 RPM. Before that, a centri powered 2v isn't going to make any boost.
So far as the a/f ratio gauge, I beileve you need to tap it the 02 sensor, but I was under the impression it either came with one or you had to supply another (and another bung in the ehxuast)?
You do have either a turbo or supercharger right? If so, any vaccum line should show boost when your building it. I plugged into the line coming out ofthe plenum area, it already hada T so I pipped in another T and there you have it. FYI, its only really going to show boost under a load, that is to say in gear at WOT above about 3000 RPM. Before that, a centri powered 2v isn't going to make any boost.
So far as the a/f ratio gauge, I beileve you need to tap it the 02 sensor, but I was under the impression it either came with one or you had to supply another (and another bung in the ehxuast)?
06-29-2007, 04:22 AM
#4
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RE: Installing boost and A/F gauges
sorry i haven't updated my car portfoilo in a while...i'm running a vortech supercharger, with an after cooler.... ok now... well as you know all 99-04 mustang have 4 o2 sensors that all tie into gether... that come up from where the shifter is located rather than cutting into all the wires and testing them... i was wondering if anyone knows exctly what wire to splice into. i have tried a few but the task of checking and checking is long and some one should be able to help... right? here are some pics of the wiring harness that i belive you cut in to [IMG]
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06-29-2007, 04:49 AM
#5
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RE: Installing boost and A/F gauges
any vacuum line will work
is the AF gauge a wide band or narrow band?
also you can tap power from your dimmer then the gauges will dim with the dash lights, don't forget to fuse them just in case
is the AF gauge a wide band or narrow band?
also you can tap power from your dimmer then the gauges will dim with the dash lights, don't forget to fuse them just in case
06-29-2007, 10:34 AM
#7
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Join Date: Oct 2006
Location: Kentucky
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RE: Installing boost and A/F gauges
You need the GREY/LT BLUE TRACE...goes to the RF o2 sensor.I tappedright by the ecm as,my tach adaptor need to be tapped into the crank sensor wires...so,I tapped both @ the ecm...if you decide to tap at the ecm ...its also pin 60.
06-29-2007, 11:56 AM
#9
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Join Date: Jul 2004
Location: Pittsburgh/Dayton
Posts: 3,062
RE: Installing boost and A/F gauges
Goto autozone and buy a bunch of tap-a-fuses for power instead of splicing wires; a lot easier.
Boost gauge, where did you tap the vacume line? Should be one of the red wires that run the area of the fuel rails. You'll also need a T-Fitting. It connects just like the bypass valve.
Sell the air fuel gauges, its worthless. Actually I'd sell both, boost gauge is good at first to make sure everything is working properly, but after that i've never used it, then sold them.
Boost gauge, where did you tap the vacume line? Should be one of the red wires that run the area of the fuel rails. You'll also need a T-Fitting. It connects just like the bypass valve.
Sell the air fuel gauges, its worthless. Actually I'd sell both, boost gauge is good at first to make sure everything is working properly, but after that i've never used it, then sold them.
06-29-2007, 01:43 PM
#10
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RE: Installing boost and A/F gauges
ORIGINAL: czwalga00gt
Goto autozone and buy a bunch of tap-a-fuses for power instead of splicing wires; a lot easier.
Boost gauge, where did you tap the vacume line? Should be one of the red wires that run the area of the fuel rails. You'll also need a T-Fitting. It connects just like the bypass valve.
Sell the air fuel gauges, its worthless. Actually I'd sell both, boost gauge is good at first to make sure everything is working properly, but after that i've never used it, then sold them.
Goto autozone and buy a bunch of tap-a-fuses for power instead of splicing wires; a lot easier.
Boost gauge, where did you tap the vacume line? Should be one of the red wires that run the area of the fuel rails. You'll also need a T-Fitting. It connects just like the bypass valve.
Sell the air fuel gauges, its worthless. Actually I'd sell both, boost gauge is good at first to make sure everything is working properly, but after that i've never used it, then sold them.