Looking for input on how my car is boosting
 

I have a 1994 Rx7
non sequential twins
Stock air box, pfs exhaust cat back, downpipe (not sure on brand), factory cat is there. Fuel pump has been replaced with a walbro 255 and I run idemitsu premix.
I bought the car used with a rebuild and slightly used turbos to replace the stock turbos that were damaged. I took it easy on the car for the first 1000 miles to break it in and quickly realized it was over boosting to 15psi. So I removed the restrictor pill but the 7psi has got boring real fast. I currently have a manual boost controller installed and its running 10.5 psi max. I'm looking for more knowledgeable opinions I'm thinking it should be fine. But experience is the best teacher and I do have that much experience with rotarys. I rather not blow up the motor just yet so any advice would be great.

I have non sequential on my 93, it boosts up to 12, then creeps up to 15, but by time it gets there it's time to shift, I also have meth inj, I've left mine alone it's it's been running fine for 3 years. not saying I suggest it for anyone else but just saying mine does it and hasn't bothered it .

I boost 10 psi and creeps up to 10.5 psi by red line so, I think I found a good spot until I get a tune

I would leave it there.