What's up everyone. First off, I have a GReddy MBC. If I blow through one side, and feel the other side, I can feel the valve closing/opening as I adjust it so I'm sure it's not the MBC. I have it T'd from the acutator to it's own VAC source to the manifold. I also have the BOV T'd on the same line.

The car runs great and boosts fine. BOV seems to be working properly, but the idle is a little high. 1200-1300 to be exact. I don't know why but when I adjust the MBC, boost doesn't seem to get higher, nor lower. It always stays at 7 psi (.5bar). What could be wrong? VAC leak? My car holds full boost all the way down the line and never drops, so is it possible that it MIGHT be the VAC lines? Please help me out!

-Thank You.

 

ttt please.

 

I might be wrong understanding you but the blow off valve shouldnt be Teed in with your MBC the boost controler should just be teed inbetween the pressure side of the turbo and the wastegate actuater. Your blow off valve should be teed in off a vaccum source on your intake manifold (Like inbetween your manifold and your fuel regulater)

 

I T'd my boost gauge from the FPR...hmmn..I think I'll give it a try..any more suggestions?

 

You will be ok with the blow off valve and the boost gauge T,d into that line. I did a F-max kit for a friend and T,d the boost gauge, blow off ,and the additional map sensor in there.