Hope you can resolve that quickly.

Good luck with that!
The 6258 in combination with a stock SR20DET (except for poncams) is really great to drive. Compared to the GT2860RS .86 I drove before that, it feels very N/A'ish and holds power on the top of the rev range much better (as expected

). Perfect combination for your everyday street car.
I somehow hope that the TS 7163 you just bought won't spool up that much later than the 6258...

I know, wishful thinking..