davedavetC

iTrader: (4)

where is everyone putting their vacuum blocks? im going to be helping my buddy install his turbo and i heard that a popular place is the Brake Booster, but my teacher told me that its not the best place because everytime the brakes are applied the readings will change? is that true?

also post up pics of your vacuum blocks por favor

thanks!

tcengel

I have a turbotoyotas vaccum block and I used the line from the throttlebody for pressure. Very steady and works great.

B_Real45

davedavetC

iTrader: (4)

ok cool thanks,

and breal thats not the big hose in the back that has the metal pipe inbetween 2 hoses is it?

thanks for the pics!

B_Real45

Yes it is - I hacked the little pipe so the vacuum tubes have something to clamp to.

That's your brake booster line going from your intake manifold to the brake booster.

davedavetC

iTrader: (4)

the brake booster is the hose with the metal pipe right? or am i mistaken?

i heard that thats the best hose to tap to, but my teacher said its not, because the vacuum will change when the brakes are applied.

B_Real45

Yes it is fine to do. I've been using it for years on many cars.

The only thing you'll notice is the vacuum moves a *little* when you slam on your brakes.. there's no other effect.

It's the biggest line which is what you want.

purplenitroustc

theres really nowhere else to put it anyways

plus even if its connected to another vacuum source the brakes would still affect it.. engine vacuum is engine vacuum

davedavetC

iTrader: (4)

ok cool thanks, ill give that a shot.

only thing that worries me is that a few of the teachers at my school (New England Institute of Technology) are saying that they would rather take a vacuum source right off of the intake manifold and not get into the brake booster vacuum line.

now im getting the same answer from more then 1 instructor telling me that everytime the brakes are applied the vacuum will drop and change the readings (is map, bov, wastegate, boost gauge etc). i just want to make sure when i do this i get it right the first time.

B_Real45

Trust me it is fine.

The line does come off of the intake manifold. It's in line between the manifold and brake booster. I've had it on all my boosted cars and never an issue. And yes I do brake hard often.

This is a great source for vacuum - but if you are worried so much about it, use the line off the T-body... but that's a small line.

purplenitroustc

yea youll be fine

davedavetC

iTrader: (4)

ok thanks ill give the brake booster line a shot

beedee

good thread, im hoping to do mine this sunday! :rosses fingers::

tcengel

Here's mine from the throttlebody line for comparison. Either way should work. Please excuse the dirty old engine bay.

[img][/img]

Ace83

iTrader: (6)

brake booster line here too.. its should be fine, and when you brake hard too that means you get off boost too so there is really no problem with that, the very slight vacuum change is negligible.. not even altering the tune IMO. its also the cleanest way to run the vac block next to intake manifold vacuum ports

Ace83

iTrader: (6)

davedavetC

iTrader: (4)

thanks everyone