Vacume Hose

[xxx_25L]

hi guys

at the back of the plenum where the break cylinder hoes conects to there is a small vacume output from the plenum next to the acc valve and i have no idea where it goes to i was thinking mabe its for the standard boost gauge can some please help me

thanks

[Craved]

hi guys

at the back of the plenum where the break cylinder hoes conects to there is a small vacume output from the plenum next to the acc valve and i have no idea where it goes to i was thinking mabe its for the standard boost gauge can some please help me

thanks

you thought correctly

std boost map sensor located next to the brake booster

[xxx_25L]

so can it be disconected because i cant find any hose around it to plug into it can i just block it off? where does the hoes go to exactly?

[Craved]

so can it be disconected because i cant find any hose around it to plug into it can i just block it off? where does the hoes go to exactly?

to the factory map sensor that controls the in dash boost guage, if you dont want that to work then block it off

[xxx_25L]

thanks mate

[made_guy]

if i was to plug in my apexi boost gauge to this map sensor would it affect it's accuracy? seeing as i'm using the apexi gauge to replace the innacurate factory one. or is it the mechanics of the factory gauge and not the map sensor that is innacurate?

[mad082]

you can just plug into there. i ran my boost gauge from there.

[made_guy]

THANKYOU!

haha i thought if it was that simple i'd find some other post/s about it, but i hadn't seen a definitive answer.

did you just splice into the wires or swap the wires? i'm thinking it's probably safest to splice in case the map sensor currently also feeds the ecu etc.

[xRHETTx]

You are talking about 2 different things.

1. Yes the hose is a good spot to plug the pressure sensor into (if you have an electrical gauge like an EL2 or whatever) or just run the hose to the actual gauge (if you have a mechanical gauge). I've got my pivot gauge's sensor plugged in here, was so simple to do and works well.

2. No you probably wont be able to use the stock boost gauge's sensor with your apexi gauge. The sensor will most likely have the wrong output range for your gauge. You can try it if you want, it might work but how are you going to know if what you have got now is any better than the stock one?

Rhett

[made_guy]

thanks man - part 2 of your answer was partly addressing one of the questions i was asking tho (i.e. about using the stock boost (MAP) sensor for my gauge). Given that it is generally accepted that the factory boost gauge is not accurate, I wanted to know if it was the MAP sensor or the mechanics of the factory gauge (motor/cog whatever) itself that created the inacuracy. so you're saying it probably won't work, but mad082 is saying he is using it and that it does work.

i don't think output would be a limiting factor, just the upper limit of the MAP sensor, i've heard conflicting reports - that it can only go to 1bar/that it can only go to 2 bar?

If i was plumbing it with a tee-piece directly to the gauge or even to an aftermarket MAP sensor, i wouldn't need need to worry about the factory MAP sensor.

Edited July 10, 2007 by made_guy