2002 M3 Dyno result

i had my car 2002 m3 on the dyno yesterday a dynojet.

it has

252 whp at 6500 RPM

223 WTQ at 6500 RPM



3 dyno pulls same numbers on all 3 pulls.



what do you guys think of the torque number is it too low.



the car would not pass 6500 RPM mark because the operator did not know how to put it in dyno mode.



the car only has a K&N drop filter as mod. Spark plug changed and valve recently adjusted with oil change.



My questions are



what would my HP and TQ be if the car was on dyno mode rev all the way to 7500 RPM..?



What would my HP and TQ be after i get the TTFS alpha N tune and Euro headers no cats with rev limiter raise to 8200 RPM



Thanks for any input guys..