is it bad for the engine to run with test pipes with out reflash .and with the pipes i feal like i lost low end torque could that be true

 

Your ECU will adjust for most bolt-on mods, its not dangerous unless your engine is running dangerously lean or something. You may have lost some torque, it also depends on your other mods.

Do yourself a favor and get it dynod, it's really the only way to know the answers to all your questions and concerns. For a good comparison do a dyno with and without the test pipes on the same dyno on the same day...