ok so because our evap sensor is flippin g stupid and jumps....can run my boost gauge line to the compressor nipple?

 

i dont know but idealy you want to tap into the line that comes off the throttle body.

unless you have a vac block then you just plug it into the block and tap the block to the brake booster line.

 

hey java i thought the brake booster line isnt very accurate and that u should tap a block to the throttle body>

 

i have very accurate readings and almost all vac blocks on the tc i have seen are taped into the booster line. i have my wastegateline, blackbox/pressure sensor line, boost gauge and BOV line all going to my vac block that taps into the booster line. accurate readings. zero issues.

 

where is the brake booster?

 

the line that runs along the back of the firewall.. It has a plastic pipe in between both ends.. You'll know which one!

 

haha ok and i had the tb hose taped before for my gauge and it would just fluctuate so much at idle and around like 8 vac....

would brake boost be more stedy or does that get effected by evap also

 

what gauge you have? 8mmhg vac at idle isnt normal, check for leaks

 

no i mean like when driving at partial throttle at 8 vac

 

ok so i taped the brake boost for my boost gauge...not with a vacuum block i just used reducers and taped direct and its on the dot no fluctuation of the needle java probs again thanks

 

you might still see fluctuations at times, depends on your gauge.. vacuum pressure is sensitive and easily changes to throttle position, load, rpms, ac on/off, fans on off and such.. if you have a digital boost gauge you will see constantly changing numbers

 

i cheaped out and got a sunpro from advance auto....its mechanical

 

you dont have to get digital though, i cant speak much about sun pro hopefully they are accurate enough.. but yeah i never had problems with the brake booster as vac source so you're good with that

 

sunpro sux. i have a sunpro boost gauge and it isn't very accurate at all

 

if its like -1/+1 psi off, i can deal with that if you are really on a budget

 

lol well i mean my wastegate spring is .4 bar so ill know if its off by aa pound but if i see a 2-3 pound misreading i know its the wastegate getting stuck