can anyone tell me how much HP im getting?

[JR2009]

its an 2005 gt
with:
flowmasters
bbk cold air intake
bbk 62mm throttle body
bbk long tube headers
bbk off road x pipe
diablosport predator tuner.

is there any way of knowing how much horsepower im getting with theses mods on???
if anybody knows please help.
thanks.

 

[CaliSpecial]

Anyone can throw a guess at it but ther's only one way to know for sure... put it on a dyno!

 

[NastyStang113]

~290-295 rwhp.

 

[GT-John]

CaliSpecial said it best put it on a dyno so it can be fine tuned, would be good for a few more hp with some aggressive tuning.

 

[fasterthanthem]

I agree with Nasty if it's a stick. If it's an automatic I'd say about 275-280.