It's a boost question
 

This has been a bit of an ongoing saga for me now. Long story short. Used to get no secondary. Now I have a nice strong secondary.
I have check as many of the hoses that I can get at. Found a few bad hoses and swapped them out. Just found a leak at the Vac Chamber and I boost more often than not now.
I ordered some parts from someone who went single and still have received them yet, but plodded on none the less.
So at the moment when I boost in 3rd I get 10-8-10 but the transition isn't the greatest. the boost flutters up and down till the transition is done and then we have a nice 10psi all the way to the line.
Could this fluttering be spike, and the wastegate dumping? It never goes over 10 on the gauge, just fluctuates between 8 and 10.
The car was decatted before I got it. which is why I was asking.

Also any guesses..... Looks like I am about to do or get the hose job done shortly...just wondering if it could be anything else.

Cheers
Bob

See if the hose job fixes it.

Could the fluttering be Spiking?

Could someone describe a spike?