1G How Much Power with Stock Exhaust?

[Caleb4G63T]

So, I have a idea of keeping my DSM quiet off idle, until I get on it. So, my main question is, how much power do you think I could get with my stock exhaust, with the stock Cat and Muffler (Took off my Carbon Ti for now). I have an open dump O2 Housing. My profile Is up to date.

 

[Nate355RS]

Everyone seems to be different, but to give you an idea the stock catback cost me 82whp, without a cat.

This dyno was on my old 2g with a 6 bolt swap and FP Green. Exhaust had a 3" downpipe, electric cutout, and bone stock catback. The purpleish line is with the cutout closed, red line is with it open. Open cutout was at 24psi, closed we could only get to 20-22psi.