Absolute BS. No way a stock port will make power to 11k RPMs. I don't care what throttle body mods you've done.
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Current: LS1-powered 88 Mazda Rx-7 : Forged : Heads/Cam : Traction???
On Hold:
H/C LS1-powered FD - Doing it Once, Doing it Right, Eventually...
Daily Driver: 2000 Mercedes SLK230 - 2900 lbs : 190 hp : Upgraded Audio
Past:
420 rwhp '02 H/C EB Z06 -
230 rwhp S/C FC - 230k mile '90 Toyota