Max hp with no hi$ upgrades?

[serpa4]

Whats the max hp I could expect with EFI live, 4" MRPB, and lift pumps?
Ran 486RWHP with full factory exhaust and no lifts.
I may someday consider water/meth, cheap and helps with towing EGTs. Would this need different tunning?

 

[JOHNBOY]

I would say honetly 515hp 1050tq. I have yet to see just water work on a Dmax on the dyno. Both trucks I have seen one with stock turbo and one with a A5k neither agained any power. Actually both lost power. EGTS on the large charger truck did not change much at all. Stock charger truck I cant recall.

 

[serpa4]

Are you saying water/meth combo is a no go? I heard it could be worth upto 70 hp and 200 deg temp drop.