|
Update
We received the ported MSD from Pray this week. Installed it a couple of days ago. Based on several graphs showing the MSD vs the OEM manifold, we added a little bit of fuel above 5,000 RPM. No other changes were made to the tune. I did not bring my laptop to the dyno today and I regret it. The engine was running about 12.5: 1 through most of the RPM range(Green line on AF graph); I would have liked to have leaned it out to make the comparison more accurate. The previous tune with the Pray Ported OEM intake manifold was was running at about 13:1 down low gradually dropping to about 12.6:1 up top. (Red line on AF graph.) The comparison is about what is to be expected, a little loss of torque down low, about a 25 WHP gain at 6,500 RPM. The car went from 403 HP/404 Torque to 464 HP/468 Torque with a flex fuel sensor, E85, Roto-Fab CAI, Soler Performance 95 MM throttle body, Pray Performance ported OEM intake manifold, New Era Performance cat delete pipes, and a tune. Installing the Pray Performance ported MSD IM netted 473 HP/463 torque, untuned. We should pick up about 5 more WHP and 5-10 more ft-lbs of torque once the air fuel is dialed in. I attached a graph that Brett put up on Facebook where he does a direct comparison between his ported OEM intake manifold and his ported MSD intake manifold.
__________________
Bolt-ons.
|