fuel consumption?

[fxbrry]

I recently added a slip on exhaust and rejetted the carb and noticed a drastic increase in fuel use. I knew the larger jets would increase fuel usage but wasnt sure how much. I normally could ride all day ( 50+ miles ) on a half tank. What should I expect to see based on a rejet?
Here's the mods I added:

HMF slip on exhaust
K&N filter with outer wear
stock airbox lid
removed the snorkel
25 pilot
150 main
needle stock location
fuel screw stock location

Other than fuel usage, the quad runs great. Any help would be greatly appreciated.

[RATPACK Z400]

70-80 miles I have same mods I go on70- 80 mile round trip on full tank.Hillclimbs run gas out quick !

[fxbrry]

That seems about right. I use to fill up before a full day of riding and not bother with taking extra fuel, guess that will change. Thanks for the responce RATPACK.