What are the normal gains with a ported ls6 intake?, with a ported tb?

 

No one at all

 

Around 10 -15 hp

 

My latest upgrade was slp underdrive pulley and remove ac ,ls6 intake manifold ,remove egr ,electric water pump.
These was upgrade I made all at once it made a little power that I can feel.
water pump-10hp
ls6 intake-12hp
remove emission -6hp
pulley-7hp

 

You got 0 by removing the emission crap unless you meant the cats.

 

Is that to the wheels? I imagine in a FI application it would help some more.