Got the ARH longtube headers on with catted x-pipe hooked to the stock mufflers. Before the dyno, I had a few codes pop up and one in particular required the replacement of the driver's side O2 sensor. TTP ordered a new AC Delco unit and it was there in less than a hour. The car sounds perfect with the stock mufflers. Subdued rumble at idle, quiet cruise, and roars when you romp on the gas. I love it.
I also happened to run into Justin from GM High Tech. Performance. Real nice guy and apparently my TA was in the street heat section from last year. I need to pick up a back issue to see. They had a firehawk in for some suspension mods.
The mods are as follows:
Vararam Intake
ARH 1-3/4" LT headers w/catted x-pipe
Stock mufflers
Dyno Tune
New Numbers
348rwhp / 363rwtq SAE
Bone Stock Numbers
297.76rwhp / 319.41
Can't believe that with just these relatively basic mods the car picked up over 50+rwhp and 40+rwtq
Dyno graph shows increase from the last tune with just the VR intake/stock exhaust.
