boost gauge best vaccum line in a 1996 gtb

[misfit]

im looking for the best place to tee my boost gauge vaccum line into. my car is a 1996 gtb and wondering if any one has any pics of exactly where too T into so i get it spot on first time so i get an accurate boost reading any help would be appreciated heaps i know there was quite a few threds on the old forums but cant find much info at the moment.cheers

[Guest]

Fuel pressure reg line

located at rear of intake manifold on drivers side

[Scoobydoo]

Circled is the FPR - or Fuel Pressure Regulator. There is a vacuum line coming off this to the intake manifold. T into this one

[Guest boostcut]

 Scoobydoo said:

Circled is the FPR - or Fuel Pressure Regulator. There is a vacuum line coming off this to the intake manifold. T into this one

holy shit batman! your headder tank has seen a hiding!

[misfit]

cheers for the replys also was just wondering probly gonar sound stupid but on the tee piece joiner i have, the little brass restricter pill things from inside it have come out (pulled them out cause they where sort of loose) should i get a new t or does this make no difference at all ?cheers

[Guest]

that resrictor help eliminate vacuum pulses from the intake runner and make the readings stable

You can try without the resrtictor but will prob have a gauge with an unstable needle reading

[misfit]

oh sweet cheers for that might just pick upa new one if it could be dodgey . so to get to the line im after to i have to take nething like the airbox or surrounding stuff to get to it or should i be able to just get my hand down there and fish it out is there any easy way ?cheers

[ReubenH]

Line 12 is the one i always hear, that just goes straight from the intake manifold to the solenoid box.

[subieboy]

 Ichi Ban said:

that resrictor help eliminate vacuum pulses from the intake runner and make the readings stable

You can try without the resrtictor but will prob have a gauge with an unstable needle reading

Interesting, Mine comes straight of the manifold, but I cant say that I have ever noticed my boost gauge being "unstable" tho...

[Guest]

Interesting ,only because your gauge will have a built in restrictor (ie decent quality)

Lots of the Chineese built gauges MUST run the restrictor in the line as there is not one in the gauge

Unstable readings will be noticed at idle where rpm is low and vac is high

Some of the cheapo nasty gauges will even rattle the needle at this time

[ReubenH]

Yeah, i've never had issues with mine either, it's a GReddy one.

[Guest]

 ReubenH said:

Line 12 is the one i always hear, that just goes straight from the intake manifold to the solenoid box.

Yeah i used line 12 too. Comes straight out of the top of the manifold, there is about 2 or 3 others there too. if you look closely there are white numers on the lines, mine were faded big time but found it in the end. they all go off to the left as said above.

Thats the easy part though ! Getting it through the fire wall is the challenging part, hope your nimble !!!

[Ammon666]

Interesting all the guys on uklegacy.com have their boost gauges coming from line 11. I guess if you're getting the right readings then it doesn't matter.

[RSB]

 GTBoy']

[quote name='ReubenH said:

Line 12 is the one i always hear, that just goes straight from the intake manifold to the solenoid box.

/quote]

Yeah i used line 12 too. Comes straight out of the top of the manifold, there is about 2 or 3 others there too. if you look closely there are white numers on the lines, mine were faded big time but found it in the end. they all go off to the left as said above.

Thats the easy part though ! Getting it through the fire wall is the challenging part, hope your nimble !!!

Theres a rubber grommitt just in behind the secondary. pop a hole in that with something sharp and feed boost guage vac line and anything else (amp power cable) through. comes into the car right beside the clutch pedal. not too difficult!