MAP EF-series Turbochargers results thread
You're incorrect. When you come out of vacuum and hit 0 psi that's steady state, there would be no pressure on the pipes at this point (past the turbo). 25psi no leak durin boost leak test means you won't leak till you see 25psi on the boost gauge. Just tested to 30psi anyway so that's not my issue. I don't quite understand what you're sayin anyway. You can't be in boost an vac at the same time. Unless you're talking absolute pressure then yes you add 1 bar atmospheric to your figures but this is all implied when people talk psi anyway, only time you really encounter this is when buying map sensors etc. 4 bars are 1 bar vac and 3 bar above
Last edited by burnzy; Feb 1, 2012 at 06:54 PM.
But like I said it would come into play when your doing a boost leak test I believe. Being you would have to make the whole spectrum to get x amount of pressure into the system.
i don't think you quite understand, when you boost leak test, testing to 2 bar IS 3 bar absolute, there is no difference on 25psi on the boost gauge whether it's being pumped in through the compressor or with the turbo. you don't have to make any spectrum, at sea level pressure is already 14.5psi, the test starts from there, so in your terms, when i say boost leak test to 25 it's actually 39.5 absolute pressure, you're trying to think too complicated mate.
Last edited by burnzy; Feb 1, 2012 at 09:24 PM.









