Alright guys so i have no idea wtf is going with my car. it runs and has no ecu codes so code 55.
If you guys need to know its a 89 hatch with a Ca18det in it, fmic, stage 2 chip, nismo fpr, s14 t28, atmosphere vented bov.
When the car is at idle its 0 but when i press the gas it goes up depending on how much gas i give. and when i was driving i gave the a bit of gas and it started going to boost fine.
So im wondering is it alright to have 0 vacuum at idle ? or do i have some sort of leak.
It will work perfectly fine. They both get the same source from the manifold.
Edit: If you have just a line from from the manifold to the butterfly setup and not the entire vacuum canister setup; remove the line to it and just run a new line directly to the FPR and tee a line in that for your boost guage.
You wont notice a difference with the butterfly’s removed unless you have the entire setup.