I am getting the following mods installed next week followed up with a custom DynoFlash the week after.

Buschur 3" Downpipe
HF Cat
Buschur 3" Catback
MBC
Walboro Fuel Pump
K&N dropin
Custom DynoFlash

Any recommendations on what I should set my boost at (I have heard anywhere from 18-21 psi)?

It is my daiy driver (15k/ year) so reliabilty is a must, yet I don't want to leave a lot of power "on the table". I do not plan to use it racing or auto-x and I fill up with 93 octane.

 

I am similar mods....I have my Hallman MBC set to 21psi with 94 Octane

 

I have mine set at 21 psi since i'm running 93 octane as well. You could do 20 just to be safe.

 

So based on the freer flowing exhaust, leaner A/F ratio and 93 octane it is pretty safe to run at 21 psi vs. 19 stock is what I am gathering.

 

That's about it. 21 is fine as long as you are always loaded with the best motion lotion you can get.
Being from the motor city, I would think you could find 94 or better....