Question: How much boost can a stock fd3s take?
 

Just wondering. I installed a boost guage and now a Manual Boost Controller. The car is running 7 psi at full throttle. Previous owner tuned her down a lil. The only mods for now is a turbo back 3in exhaust. Thanks
Tank
:balls:

Please read the FAQ:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/faq-3rd-gen-other-useful-links-68640/
FAQ for 3rd Gen & other useful links

I hope you mean it's a cat-back (look up "boost creep" in the FAQ)
You also should read the discussions on "reliabililty mods"

10.0 lbs. MAX no spikes, no creep. and that's 10.0 not 10.5...