Would it be dangerous to run 12psi of boost with my stock sequential twins even if I have the stock cat converter?

My mods are: 3" Downpipe, 3" Catback, Apexi Twin Intakes. Still have stock IC and wastegate is NOT ported as of yet.

I kept the stock cat because I was worried about boost creep without a ported wastegate, so Im wondering if its an issue since I have the stock cat and shouldnt be getting much boost creep?

Thanks for any answers or constructive criticism.

 

should be ok, but it never hurts to get a fuel pump, and a larger SMIC.

 

Definitely get rid of the stock IC - your intake temperatures will get nasty under boost unless you live in Alaska.

I ran the base mod map on the PFC with intake, M2 large, downpipe, high flow cat and exhaust at 12.5 psi and saw 10:1 AFRs under boost.

 

Check your AFR's before you blow the engine.Some cars run 10-11 afrs,some other not,mine was in the 12.5 with the stock cat new pump and new injectors!!

 

The PFC base mod map is designed for all standard bolt-ons (with high flow cat, not midpipe). I've never heard of anyone blowing their engine with just bolt-ons on this map (assuming they kept boost under control).

While every car is different to some degree, 12.5:1 AFRs suggest a measurement error given how rich this map runs under boost.