I switched out my old school T51s for a T51r kai and ran it on a pretty conservative tune, knock was only at 6 after tuning, at 19 psi on 91 octane pump gas.

This is on my new dynojet 224 xlc, which seems to have the same issue with rotary ignition pickup as my old 248x. I always lose the ignition signal around peak torque or at high rpm no matter what lead I chose. Dynojet is to do some debugging on it remotely. I think I may have to buy the optical ignition pick up.

With such low knock readings, I am pretty sure I can break 500 rwhp on straight 91 next time I put the car on.