Hey guys.

I have a XS dual stage MBC in my Si. It will run a set boost level for a while then itll just change all on its own. It was tuned on 14.5 psi. All day long steady at 14.5. Later that night shot up to like 20 every time id spool it. So i turned the *** down....it stayed steady at 14psi for about a month now and last night it decided to run 10psi.....holds steady...no spiking ever....whats up with this thing?

btw i have a tial wg with a .6 (i think) bar spring.....full race mani.....SC61...if any of this matters.

thanks guys