04-02-2012, 07:55 PM
Stock as a brick 2009 Pontiac G8 GXP before and after on swapping the TB out on the dyno:
04-30-2012, 05:38 PM
Round two on a Dynojet yesterday. I was rushed since I was planning on leaving around the time I got on the dyno so take it as you will.
OK, my scheduled time on the dyno day was at 4:30 got on the dyno and made the
first pull at 5:24:11 and made 357.40hp/367.46tq bone stock
Second pull 5:28:22 and made 358.40hp/368.86tq bone stock
Swapped the TBs out
Third pull at 5:37:42 and made 363.45hp/372.04tq bone stock with just the ported TB
Fourth pull 5:38:52 and made 361.13hp/368.26tq bone stock with just the ported TB
The engine was not even shut off between the 3rd and 4th run.
I overlayed 1st and 3rd/2nd and 4th:
04-30-2012, 08:33 PM
Nice gains. I'm going to port mine soon.