I'm going to ask this noob ricer question. My car is a stage two with intake and exhaust and header. If I add #50s and a tune, about how much of a gain would I be looking at?

 

It all depends on who tunes u..10-20 hp should be possible..
It also depends on how healthy ur engine is.

 

I've heard so many different things, I don't even know if its worth the money

 

Ur whp is gonna depend on ur tune plus ur setup, what size pulley u getting? Who tuning you? Is it a can tune or custom? All of this will decide ur power level.

 

Gms2? You won't really gain anything from the injectors if you don't switch pulleys. But even a good tune (actual tune, not canned) over the gms2 tune might get you 10whp+.

Now if you pulley down with injectors, might get some more. So many things come into play and it's hard to be 100% sure with tunes all being different. One guy might get 20whp while another gets 5whp.

Only way to really know what you gained would be dynoing before and after on the same dyno.