Has anyone pressure tested there S/C'd car for boost leaks?

[CFm3]

I have don this in the past on turbo cars, just wondering if anyone has done it on the e46 supercharged cars?? Normally I would construct a "plumbing" contraption, that would cap off a part of the intake piping. Usually soon after the maf, and than on this cap would be a compressor connection. Usually I pump to 5 or 10psi, any higher and it gets a little scary. Than do a spray down on the connections and look for bubbles...

Also, with AA's modification of the bypass valve, and leaving the top nipple open, will this leak boost?

Where do you guys commonly "cap off" from? I think the simplest would be to, undo the intake from the superchargers, and just compress from there... If it holds pressure, were good to go!

Thanks!

[Activ3]

I think it'd be easier to do a smoke/fog test.

[sheefo2k]

yup.. Smoke test is good for any vacume leak. so it will work with boost too.

[CFm3]

Can someone explain the smoke, or fog test? Its my understanding that these dont build much pressure? I never liked the vacuum test, as hoses can sometimes seal under vacuum, while they can pop off on boost...

[SammyV]

bump