Guile has 900 stun meter. He gets pwned by high stun attacks very quickly.
Guile Ryu match up for me is the only true 5/5 match up, since both characters have enough tools to be feaed and respected by one another. Fireballs should be no problem to guile with new charge time and, at some rare occasions, Sonic hurricane prove to be match changing ultra.
Never EVER jump the hadouken unless he hadoukened while you are jumping, but then you are risking SRK LOL Ultra 1, pushed to corner and have to deal with his wake up game. Instead Sonic boom the fireball, Focus absorb it, or just block it, it does 15 damage on block, big deal (its more prefered to either sonic boom it or Focus absorb it :P)
If Ryu is tatsued your sonic boom, you are not fake booming enough. Whiff Cr.mp or St.lp on some occasions, press some fast buttons like St.mp, to bait him to tatsu. If he hadoukened, just sonic boom it since you will still keep your charge.
The most difficult situation against Ryu is near his poke range. At this range it is not advised to Sonic boom at will, since tatsu can directly punish it. Also at this range it is difficult to Sonic hurricane his hadouken due to how close he is.
However, at this range, every sonic boomed hadouken (as in every time a hadouken and sonic boom meet) you can backfist for free 120 damage. At this range, you can Forward sobat (forward medium kick, the hop kick) his overrated cr.mk on guess in exchange of losing momentum and charge to score a hit, or backward sobat to avoid his cr.mk on guess (in both cases, you need to press the button first) and regain momentum and reset the match with a charged position for both Sonic hurricane and boom. At this range just stop him from getting close to start his cr.mp tech traps bullshit, since he can use variety of ways to push you to corner or to set up his ultra.
This match up test your patience, since your only damage output is crapload of Sonic boom chip damage, few pokes, some anti airs, and a sonic hurricane if your reactions are good. The only way to get better at this match is to play solid and to play smart against REAL Ryu players, not the mashing new ryu players.