Both Epic and Kassel have tunes for the 3.0si, but both are around $900.
I am running with the following.
SuperSprint headers and race exhaust.
Dinan bigi bore throttle body
AFE cold air intake
JB Lightweight flywheel and clutch
The 3.0si already has the stage 3 intake. There is not much more you can do.
If you really want more power you should look at upgrading the differential to a 3.73 LSD
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