Port & Polish Gains, N/A

[Christian Beaudry]

I was wondering how much gain an N/A SR20DE can get from a Port & Polish.

There is a guy here that does them for 500$ a stage. All 3 stages 1500$
(Canadian funny money).

He says since he doesnt know the SR20 it can be anywhere from 10$ to 30%
gain. Im thinking more 10%, he's used to working with muscle cars, but he's
a VERY good engine guy.

So to those who have done this, how much gain did you get ?

Thanks

Chris Beaudry