Boost Gauge

[Maverick14]

Hi all,

I want to get a boost gauge for my SG5 cross sport forester to keep an eye on what the turbo is doing (I don\'t think it is producing the boost it should).

It has been years since I\'ve purchased one - what are the current make/models to look out for? I don\'t want to speed a lot of money, all I want is a reliable and good looking gauge.

Thanks,

Scott

[Johnnynz]

Depends how cheap you want to go, theres really not a whole lot wrong with a Repco/supercheap jobbie other than looking a tad cheap.

If you want something brand name look on Trademe, not unusual to find a nice brand second hand one for good price. My Apexi carbon face one was about $40 with a holder and its very cool.

[Guest]

Grab a branded one from strongs for the same money as a cheap chinese one which often read wrong by 1-2psi which can be life or death when not tuned and you wack it up to a safe 14psi which turns out to be 16psi and you have no idea coz you have no wideband.

[Maverick14]

Excuse my ignorance... \'Strongs\'?

[sti555]

 Maverick14 said:

Excuse my ignorance... \'Strongs\'?

http://www.subaruspeed.co.nz/

[Maverick14]

So I bought a new Apexi EL electronic boost gauge off TM and put it in last night... either I have cocked up or the gauge is faulty... It is reading about 0.5 - 0.7 bar to high. At idle the needing is sitting just under 0 and then at full boost it is about 1.5 bar....?

The only thing I didn\'t install is the little air filter thing that sits in the same vacuum line that heads off to the pressure sensor.

Thoughts? Buggered gauge, or stupid installer?

[lachlan]

sounds like you have wired it up wrong so its doing its 0 function while the engine is running . if you start the car then stop the engine with the ignition on does the gauge go to 0 ?

or sit at like .5?

[Maverick14]

 lachlan said:

sounds like you have wired it up wrong so its doing its 0 function while the engine is running . if you start the car then stop the engine with the ignition on does the gauge go to 0 ?

or sit at like .5?

From memory when doing this it returned to + 0.5 bar

Back to the install manual I go then....

[lachlan]

yeah does it do an "opening ceremony " eg when u ignition on it goes for a full sweep of the dial then returns to 0 or bottom ?

it might have a constant wire and a acc wire . u either have them wrong way round or both to the ign supply

[Maverick14]

 lachlan said:

yeah does it do an "opening ceremony " eg when u ignition on it goes for a full sweep of the dial then returns to 0 or bottom ?

it might have a constant wire and a acc wire . u either have them wrong way round or both to the ign supply

Def does the full sweep when the ignition is turned on, it goes all the around to 2 bar then returns, my memory escapes me as to where it returns to.

Does anyone have an accurate wiring diagram for them? The instructions that came with it are rubbish.

[lachlan]

will only have 3 wires wont it ? just play with them on a 12 volt source untill you figure out if it needs a constant . or if one wire goes to acc and one goes to ign

obviously dont swap + for -

[sobanoodle]

Check if it has a calibration function (like Defi, mine was slightly off zero, recalibrated to be spot on)