z31jaime

OK so 2 days ago i finally put my MBC back in for testing. Im still trying to track down the vacume leak. (which i suspecte is why my car is pulling timing at WOT and Ideling at 1200RPM). I figured I could have a bad BCS and maybe I'd get luck and fix it with this. Anyways, I set it up, and its hitting 13psi but I'm having 2 issues... #1 its not feeling like a strong 13Psi. Like I remember before at 13PSI this thing would spin the hell out of the tires now it honestly feels the same as without the MBC. #2 I spike to 13psi, then slowly bleed boost to about 8psi.....where the car shifts and back up to 13 and bleeds again....

I'm throwing no CELs so Im having a hard time finding the leak. Most recently I replaced all the Intercooler lines with silicone ones. so that "should" be covered. Replace the hose from the IACV to the vacume tree. New silicone TB connector. I removed a cracked Snabb intake manifold spacer and replace it with an OEM gasket, so that should be new. All my silicone lines are new rubber lines. Intercooler has been checked and has no visible cracks.

So at this point I'm lost as to what it could be.

Anyone think maybe the CBV is torn? any other ideas?

Ok so, I've got a 95 t5 wagon, and among my other volvos I recently picked up a 96 850 NA... with a freshly rebuilt head (less than 3k miles on it). The owner rebuilt it and drove it a few weeks and spun a bearing. Anyways I was planning on taking the NA cams, and TB and intake Manifold to add to my wagon, but then I thought... well WTH, if I'm doing all that why not just take the fresh rebuilt head....

My question is whats the difference? I figure if the cams are a direct swap then they cant be that different... right?

Any input would be great... thanks.