Long tubes, ORY, Catback and tune gains

[PEWTER Z]

If I was running 12.80's before, what kind of 1/4 mile times can I expect after having LT's, ORY, Hooker Catback, and a full dyno tune done afterwards? I'm hoping for at least 12.50's. Thanks.

[onyx_rock]

12.50 is my best last summer with those mods and similar convertor. Just had a tune so Im hoping for a little better this year.

[nhraformula]

12.50s is very real numbers.
before my cam i was running those times.