I did mine in stages. A lot of stages
This was over the past 18 months. Dyno results on the same Dynojet. All 93 Octane.
I have about 250 runs down the quarter mile.
2009 Auto, stock - 428 RWHP, 432 RWTQ
12.6@112 MPH
2009 Auto, stock - adjusted the blower bypass
12.4@113 MPH
2009 Auto, Airaid CAI, W4ME Tune - $700
12.1@117
2009 Auto, 2.55 Upper, W4ME ported snout, Airaid CAI, W4ME Tune - 540RWHP, 544 RWTQ - total cost $1500 (includes CAI)
11.4@122 MPH
2009 Auto, 2.35 Upper, ID850, W4ME ported snout, stock LS7 TB, D3 spacer, Airaid CAI, W4ME Tune, Hennessey HX - 573RWHP, 569RWTQ - total cost $3900 overall
11.2@124 MPH
2009 Auto, 2.35 Upper, ID850, W4ME ported snout, stock LS7 TB, D3 spacer, SW headers and exhaust, Airaid CAI, Ed Hutchins Tune, Hennessey HX, HP Tuners - no dyno sheet - total cost about $7000
11.2@128 MPH (spinning 1-2, 2-3)
current work - 2009 Auto, 2.35 Upper, ID850, Formato ported SC and snout, NW ported and polished LS7 TB, D3 spacer, SW headers and exhaust, CAI, HX, Formato tune (pending install and tune) - total cost about $9000